Rent safe and private fenced dog parks hosted by locals in Sandy, Oregon

4.6(5)

Come relax and let your dogs run and roam in our fully fenced 1/2 acre. Shaded by large trees with wildflower garden in the summer months that you are welcome to pick from. Lined with blackberries, when you visit in August take some home for a blackberry cobbler! The area also includes separate dog 30 foot enclosed dog run that can be utilized during your stay if needed. Doggy bags, fresh water, and tennis balls onsite. Chairs for any humans your pet brings along that can be moved anywhere most comfortable.

4.9(75)

This is a fun spot fully fenced in across a small foot bridge with double gates for easy entry and exit from parking area. Open 7am-7pm everyday! Check us out on IG @industrial_dog_park (503)406-5888

5(12)

Welcome to Creekside Pup Park– Where Play Meets Training Excellence! Unleash the fun at our fully fenced private dog park, offering a secure and spacious environment for your furry friends to romp and play. Nestled alongside the soothing sounds of a nearby creek and surrounded by picturesque local farms, our park is a tranquil escape for both dogs and their owners. Features: Comfort and Convenience: Relax in our canopy-covered seating area, complete with portable restrooms and convenient waste disposal stations, ensuring a clean and pleasant visit for all guests. Agility Equipment: Take your dog's training to the next level with our professional-grade agility equipment. Perfect for enthusiasts aiming to compete at high levels, our setup is designed to provide a challenging and rewarding experience, and watch your dog thrive in a stimulating environment tailored for skill enhancement and competitive preparation Unfenced portion: There is a creek and forest area you can check out. Just be aware that you need to have full control of your dog at all times when in the Unfenced portion. There is wildlife that visits the property and other dogs across the creek. Join us at Creekside Pup Park for a day filled with joy, exercise, and the opportunity to bond with your pet in a setting that caters to both casual play and serious training. Book your visit today and experience the ultimate canine adventure! Please like and follow our Facebook page too! https://www.facebook.com/profile.php?id=61564863070512

4.9(126)

Fully deer fenced acre+ space with seating, vineyard views, rolling field, outhouse, and casual wine tastings on request with booking

5(141)

4.6(47)

Gorgeous wooded area in Oregon City. Fully fenced but a bit wild! Plenty of paths cut through and adding more all the time to walk but if you go off path expect burrs from the grass.

5(788)

We welcome you to White Oak Country Farms! Our Outdoor Dog Training Grounds are located in the Hamlet of Beavercreek. Just outside of Oregon City. An excellent spot to personally train your dog or utilize Certified Dog Trainer: Verena Sutherland Canine Behavior Coach at Reward Your Dog Training CBCC-KA, CPDT-KA, KPA-CTP, FDM verena@rewardyourdogtraining.com 503-995-0892. Upcoming Classes: - Recall Training - Loose Leash Walking - Basic and Intermediate Manners - Excited Dog Class - Chill Dog Class - Nervous Dog Class We offer a hay bale maze, agility equipment for additional training and fun! Enjoy the views of the countryside, farm animals (sheep, goats, horses and cattle) wildlife and hayfields on our 71 acre family farm!

5(219)

We're a great option if you want a peaceful and private place to relax at. There is plenty to sniff for the pups and we maintain the pasture regularly to keep the grass short. What we offer: ✔️ Large fully fenced pasture ✔️ Large parking area for easy parking and multiple guests. ✔️ Private entrance straight to the pasture. ✔️ Open barn for shade ✔️ Chairs and table ✔️ Waste bags and trashcan for easy clean up and disposal. ✔️ 5 gallon spring bottled water jug for dogs and humans. ✔️ Clean field If you have questions or concerns feel free to send us a message :) *EDITS* 5/28/24* By request we've made some improvements on making this spot more small dog friendly by filling in noticable gaps under our fences and gates! 6/4/24* We've ordered supplies to update sagging area's in fencing and added water bowls. 9/16/24* Gate lock has been fixed. Reviews with photo's will be posted onto our Instagram! 🐶📸 @furryfellowsdogpark

5(9)

Magickal Ladybug Haven is a little slice of Heaven on Earth, conveniently located 2 miles from the city center of Newberg off Hwy 240 and Red Hills Road. I have a lounge in the open air barn for you to relax, enjoy your coffee or wine. There is a view of the top pasture. I also have a large table with chairs under the Old Oak Tree with view of lower pasture. Please bring acrylic glasses as I do not permit glass in the area. I have 2 horses in the front pasture, you will see when driving down the cathedral tree lined driveway. I ask you to go slow as we do have barn cats, critters, and a 15 year old rescue American Staffordshire, whose deaf and his hind end is a bit shaky. He will be in/or put in when you arrive with your dog(s). Due to this spot being my horses' rotation pasture, PLEASE, NO Diggers. I won't risk an injury to myself or my horses by an unseen hole. Thank you in advance! Please clean the dookie (poop) up if your dog goes dookie in the pasture, like you would the dog park or at home. It's no fun for anyone who steps in it (it's not like horse poop at all, as you know). There are other people, dogs, myself and my horses and my mower that are now enjoying/using this space. I have a lined trash can in the open air barn and extra dookie bags hanging above the trash can. If you have forgotten yours, please use on of ours. Thank You in advance! There are times that I may have to do work on the property, or someone in the household may be out on the veranda of our house, or have to come or go during your reservation. Our cars are parked on the asphalt between open air barn and our garage. We are always respectful, and will attempt not to have anything major going on during your reservation. This is our home and farm and are happy to share...and please realize we live here. If there is an issue with this, please book another location. So appreciated! I do have an Airbnb room on site and may have a guest. There are no dogs or children allowed in the house as my rescue dog's trauma was with kids and other dogs. It's his house. There is mud on the other side of gate opening and in pasture when it rains, just so you are aware. I have an additional property/risk waiver for you to sign at check in. You only have to do this on your first visit. I appreciate you obliging. I'm looking forward to meeting you and having your pooch(es) enjoy their sniff time. With Joy and Magick, Melodee

4.9(9)

Large spacious backyard lots of space to run and play! your pups will loveeee it! miss having mine around and would love to host and have yours enjoy the space :) If anyone has recommendations of what they’d need I’d try my best to accommodate! Water is available! Bathroom if needed as well. I don’t have my dogs stuff anymore since it’s been a couple years since he has passed now :/ but I will replace like toys and such. Water bowls etc. I do right now have bacon wrapped bone treats! First come first serve lol

5(2)

Fully fenced yard with chairs and shaded areas.

5(49)

This is a working sheep farm. You may see rams in the adjacent pasture. The L shaped field is about 2.5 acres of open ground. A second field is now open, adding 3.5 acres of short grass. Feel free to park directly in front of the gate for ease of loading in and out. You may see me or my farm hand at work. If you need a no visual/no contact visit, please let me know in advance.

5(45)

Fully fenced (6'), small yard with a private gated entrance. Plenty of street parking or welcome to park in the driveway if available. Enjoy relaxing in the hammock or lounge on the patio furniture* while your pups sniff and run around! Grass, mud in the back corner, deck, and concrete to run about. We also have 2 small dogs, so if your pup ever wants some play time, just reach out to me ahead of time. * Furniture is packed up for winter. Please visit starting in the Spring to enjoy!

5(74)

Closing October 21st for winter. Kiddy pool has a hole in it, so will be unusable until further notice! Please read ALL descriptions (including photos) before entering property. Return the toys and balls to where you found them, to the best of your ability. 5 acres is a lot of ground to cover, and if I have to round everything up after you visit, you will be blocked. Losing a ball or three is no big deal, it happens lol, but not picking up after yourself is rude. Please leave the place as you found it. Don’t knock on my doors, and do not ask me for my phone number. We have 3 separate fields. Black berry bushes are very present in all fields. FIELD 1: Closest to busy road, least suitable for free-roam incase of delivery or neighbor utilizing third gate on easement. I consider this field “the buffer zone”. Best suited for dogs with proper recall skills, or for those who want to hide biodegradable items in the rock piles to be found. Orange flags indicate boundaries with a buffer to prevent trespassing onto neighboring property back into the woods. There are times when I have to leave or enter the property, which I will notify you if this is to happen during your visit. Our three dogs will be heard from this field (from inside of the house). You will find the 2nd gate entrance here, into field 2. Look for the black garbage can, as well as blue kiddy pool to navigate to field 2. FIELD 2: the best field! Our backyard. It is completely fenced in, private, and safe for dogs 15lbs and up- smaller dogs such as our 9lb dog need to wear a device to recall because fencing is large enough for them to escape through. The fencing is approximately 3’ high. Horses can be seen from this field on neighbor’s property, along with their dog, Cooper. It is sloped, which is excellent for exercise! There are trees blocking our house and windows for privacy, easy gate access, and accessible water. There is a nice view of Mt. Hood, and a couple of log benches around the property. I try my best to maintain and refresh a kiddy pool and the water bowl. I strongly recommend against use of field 3 during foggy periods for safety of your pets. Should a dog without proper recall training decide to wander off in field 3, you will have a LOT of ground to cover without much sight distance (on foggy days). Water access is in field 1 by the house, please turn off with hose in “on” position to prevent built-up water pressure in the hose. Field 3: this is an excellent field for dogs with recall skills. Through the first two fields, is field 3, a property long and flat, one which openly borders our neighbor’s property. You must go through the gate at the bottom of field 2 to enter this field. While this field is technically entirely fenced, the entire property is not all ours, so we have marked boundaries using orange flags. Please reference photos for what these orange boundary flags look like. The orange flags indicate hazards along fence line, entrance to bee hives, and boundaries between properties. Cautions: Coyotes frequent this lower field on a weekly basis, so large dogs with proper recall training are advised only. I strongly recommend against use of this field during foggy periods for safety of your pets. Should a dog without proper recall training decide to wander off, you will have a LOT of ground to cover without much sight distance. Also, coyotes tend to be more active during these foggy periods. This field (field 3) is a split property (2 parcels), half ours, half theirs. The neighboring owners have bee hives! Please be mindful of bees, and maintaining general boundaries (see photos of orange flags designating boundary lines). It’s quite rugged, so be mindful of wild animal scat, mole holes, and uneven grass. There is a digging area here too. I have seen coyotes, skunks, deer, owls, a feral cat, and bunnies in this field. Horses and neighbor dog cooper are sometimes visible. Please contact me with any questions!

5(223)

Whether you're looking to catch the sunset, bask in the sun or relax above the clouds, our yard is the place to be. We are located just a few minutes from HWY 205. PNW weather can be unpredictable so keep in mind when booking in advance and BUNDLE up! The fully fenced yard features views of the city, includes lounge chairs, dog toys, water hose, and some covered shade. Treats on occasion for dogs and humans. Rocks, grass and dirt cover the yard. *Parking space is available. Please use Caution when entering and exiting the property. There are hills, slopes and even deer spotting. 🦌Sunsets are the best right now! (-6:30) Please empty water bowls before you leave. Place any used toys in the Red bin. New toys rotated regularly. Thanks in advance for picking up after your dogs!

5(2137)

OPEN SUNUP TO SUNDOWN AND AFTER DARK TIL 10PM! SOFT FIELD LIGHTING AND GLOW COLLARS PROVIDED! VERY IMPORTANT!!! EACH PARK (F1 AND F2) HAS A SEPARATE ENTRANCE AND DRIVEWAY WITH THE SAME ADDRESS. SO, YOU MUST READ THE SPECIFIC DRIVING DIRECTIONS INTO EACH PARK. PLEASE TELL YOUR FRIENDS TOO IF THEY'RE MEETING YOU HERE. THANK YOU!!! upon entering into either park, you won't be able to see people or dogs in F2 while you are in F1. Proud to be Sniffspots most popular park(s) with the most reviews. Read about us in the February 27, 2024 issue of Newsweek magazine, June 5, 2023 issue of Womens World Magazine, and the Business Insider's June 9, 2022 articles. The wading pool is out, with the hose nearby for you to let Fido cool off during the hot days and evenings of summer. Just please be water wise, and only fill a few inches up. If your dog dirties it up, please dump it out for the next guest to use. Thank you!!! STAY COMFY WHILE CHUCKING BALLS FROM PLUSH AND COMFY SEATING ALL AROUND OUR HALF ACRE FIELD. OUR LARGE BEAUTIFUL PATIO AND COVERED AWNING WILL KEEP YOU DRY. We also have an 'Alexa' dot ready to play your favorite songs while you're here! Just say 'Alexa' first, tell her what you like, and she'll play just about anything. You and your pups will love our very artistic boho farm! Mud free paved entrance and patio, extra picnic table, chairs and tables, swing, toys, night lighting til 10pm, light up collars/leashes upon request, disc golf basket, clean porta potty access, doggie poop bags hanging all around the field w/disposal cans! There's alot more to the 7 1/2 acre farm that makes it very unique. it's sort of like a rural "Portlandia". We've hosted dozens of weddings, parties, concerts, and reunions here in the past. So, just ask if you'd also be interested in using the farm for your own special event! We've had tons of doggie play date and birthday parties here. Just inquire first letting me know how many cars there'd be. If too many cars for F1, then F2 will work out during dry months, as you can drive your cars right into the field. Hope to see you and your pups playing out here soon! We try very hard to remain the #1 spot between both parks, globally. Thank you for helping us achieve that by continuing to support us!!

4.9(10)

The area is a fully fenced field almost 2 acres. A short walk to field from parking.

5(228)

Our yard is mostly grass with some trees for shade, chairs and a hammock for humans, and plenty of privacy for all. Fences are solid wood, 6 feet tall all around. Our pup, Major, will be indoors (unless you request a play with him - he's a friendly golden retriever). We'll keep the curtains closed for your privacy, but he may sneak a peak to say hi through the window. If you have a reactive dog and would like our dog completely out of sight, message me and I can accommodate that with prior notice. There are neighbors on the side with dogs that your pup may see arriving to the spot. Plenty of parking in front of the house. Private side yard entrance to the right of the house by the garage. Please use what you see available - pooper scooper and dog bags on the patio, toys throughout the yard, towels, hose and water station for pups, garbage bin on your way out at the side of the house.

5(1215)

First time guest? Use discount code FarmPlay for a $5 discount. Fostering or training a dogo? Use code FosterSF&G for a $5 discount. This is a 5 acre farm with 1 full acre dedicated to the sniff spot. The pastures are cross fenced allowing for room to explore but not too far. Horses that offer some additional entertainment but are always a safe distance with a large space (enough to drive a large truck through) between fence lines. The animals are not reactive to the dogs being around and even barking at them. They don't respond and generally the dogs get bored of the horses and move onto exploring the space. We have some simple agility items in the space along with balls and other toys to help entertain both you and your dogs. As a guest you have access to: * Fully Fenced Acre of play space for off leash adventures * Water - leave the blue handle in the up position and use the small black lever at the top of the hose near the faucet to get water. * Poop baggies * White garbage can * Dog towels, clean ones in the clear container and dirty ones go into the grey tote. We ask you use 1 towel per visit if possible. * Porta Potty * Shelter with chairs and a small table you can put anywhere in the field during your visit we just ask that you put them back when you are done. * During the summer days we include a doggie pool. They are blue kiddie pools. Double them up when you use them so they are easier to empty and less likely to break. Please dump the pool and return them to the corner when you are finished. IMPORTANT SAFETY INFORMATION: This is a field that has uneven ground including mole and gopher holes. Please watch your step. Please keep within the Sniffspot area. If you happen to throw a ball over a fence just message me and I can retrieve it after your visit. It is important to stay outside of areas market private property. Those gates also have extra locks but just in case we want to be sure everyone stays safe. USE OF INDOOR ARENA: During harsh weather (over 95 degrees or winter would be those days of wind and heavy rain) the indoor arena may be an option. YOU MUST MESSAGE me prior to the visit to ask for use so we can make that ready for you if it is available. We are excited to have you come and share this special place with us.

Large yard for your dog to run around and play.

This spot is located in SE Portland in the Brentwood Darlington neighborhood. This is a fully fenced (chain link) space with access to water (hose), chairs, and a hammock to relax in. There is plenty of space to allow your dog to run around and get that energy out! I do want to also note that there is a neighboring dog that may occasionally be visible and this dog does bark a lot when he's out in the neighbor's yard.

5(335)

Hi! My name is Theresa. I recently started my sniffspot and love sharing my property with you and your doggos to enjoy. We will provide you and your best friend ( friends) with two acres of fully fenced property for your dogs to run free! Part of the property is Forest, where your dogs can forage, roam amongst the trees, dig, or just take in all the smells. Our visitors tell us It's the best of both worlds with the woods to roam and open areas to play fetch or practice on some of the agility equipment . Our space is very peaceful and beautiful, with lots of texture. We have a shade (or rain) canopy with a picnic table under it, fresh water, toys, and poop bags. :) I have 3 dogs that roam the upper 2 acres of the property. Sterling (border collie) Piper (border collie) and our newest member Wriggley ( husky mix) SHE was supposed to be a foster dog, but we fell in love with her... If your dogs roam up to the very edge of the Woods where the 4 acres are divided, they may see or hear my pups if they are outside. My pups may also bark for a minute as you play in the grass area down below if they see you. The property adjacent to us is the home of two nice dogs. They are very friendly. If our neighbors let them into their back field, there is a chance you and your dog will see them. Those same neighbors also have some piglets that are sometimes allowed to roam on the back end of their property. There is a chance you will catch them romping around. We hope to see you soon!

5(359)

Over 20 fir trees + other trees on this expansive lot in Beaverton. Organic - no pesticides, fertilizers, or chemicals used. Grass, bark chips, vinca minor, under a canopy of large trees. Shaded and open areas. House located on a cul-de-sac. In the process of becoming a "Certified Backyard Habitat" by the Audubon Society. Native plants & trees encourage native species (butterflies, hummingbirds, etc). Grass is green in the spring and fall, can be yellow/green in the summer (water preservation.) Water, water bowl, & balls/toys are available for dogs. Bench & chairs for use. Picnic table shaded by trees. Lights on 2 story deck, lights that surround the deck, and lights above the cement patio available upon request. Plastic bags available to pick up messes, you can place bags in trash (blue bucket.) Deck/stairs, trampoline & fire pit off limit at this time.

5(118)

Happy Apple Dog Park-AKA Gus’ Park is a fully fenced yard with lawn and some bark dust, There multiple shrubs, trees and plants for your furry companion to check out. A farm favorite are the giant oak trees which provide shade. Feel free to take a seat and watch your friend run and explore! On site we have a small dog (23lbs) and a multiple cats as well as three horses. The neighbors on both sides have dogs but there is no contact-just line of sight! Come enjoy Gus’ favorite spot!

5(2387)

.Proud to be chosen as Sniffspot's global business model again in the February 27, 2024 online Newsweek magazine, the June 5, 2023 of Womens World magazine. Also featured in Business Insider on June 9, 2022. NOW YOU'RE WELCOME TO DRIVE ONE RIG INTO THE FIELD, MUD FREE (stopping at end of asphalt), then closing the big farm gate behind you so that you can release your 10# and over pup(s) without leashes. or worry of them getting into the road! VERY IMPORTANT: EACH PARK (F1 AND F2) HAS A SEPARATE ENTRANCE AND DRIVEWAY WITH THE SAME ADDRESS. SO, YOU MUST READ THE SPECIFIC DRIVING DIRECTIONS INTO EACH PARK. PLEASE TELL YOUR FRIENDS TOO IF THEY'RE MEETING YOU HERE. THANK YOU!! Upon entering, you won’t be able to see the people or dogs in field one (F1) while you are in F2. Maybe just a glimpse of them when they are arriving or leaving their cars from a distance. We have buildings and trees that separate the two. We offer poop bags all around the field, and a garbage can for your use (used poop bags only please). If you happen to see a pile someone missed, please help us out, but PLEASE BE AWARE OF YOUR PETS AND PICK UP AFTER THEM, TOYS TOO!!!. Thank you so much for your cooperation! We also provide a large fence attached bowl and water hose, balls/chukits and fun toys, comfy swing, and plenty of tables/benches. ALSO, if you'd like to have an event on our farm anywhere, we can discuss your wants and make something work for you. We also host overnight stays in two cottages we have on the property. BUT, you CANNOT bring your pets here to stay the night. We want to keep the cottages pristine and dander free for our Airbnb glamping guests that book here. Thanks for reading! Hope to see you here soon! We know you will love our magical farm!

5(3874)

4 securely fenced acres of dog paradise. Open spaces to play fetch, or a game of puppy tag; mature Douglas fir's for shade and squirrel watching; and a small pond (more like a deep mud puddle masquerading as a pond) to cool off when the mood strikes.

5(523)

Hello I am Mookie, a Golden Doodle who loves to play ball and my Human is Grace. She got me this place with a long yard, perfect for playing with a chuck it! I begged for a pug and she let me have Frankie. We are happy to share our yards which have different areas for different Dog needs. Human needs can be taken care of too. We are relatively new to Sniffspot and will be adding new features as we go. Our pictures show how much we have changed since we opened the very snowy end of January. Frankie and I will not be coming out to visit your dogs, but once you leave we will enjoy learning about them on our scent hunt. We believe this will create a lot of interest and fun for us and for your special family members too. A little info about my place, I have safe space to unload and load the doggos. Important to close the gate as you enter and exit the property. Everywhere is fenced. It is 2 acres total, the area that you will be playing in is a very nice long field with a small pool which gets changed between guests, and a larger one that My human adds water to between guests. it looks dirty, however, it is from the sand box and dirt hills that my human made for the dogs to play in. It is too large for her to clean after each guest. There is a water hose with a shower head that you can use for play and clean up as well. Added attraction, MOLES and we love sniffing after them. Be watchful of holes that my human missed filling between guests, she tries very hard to find them, but Frankie is a digger! This is a place for fun , everything is not perfect , but the yard is a lot of fun for Frankie and also for me! We love to explore and sometimes we see deer here and other wild animals! UPDATE: All fences are secure. IF for some reason your dog slips out the farm gate entrance to the sniff spot, the entire property is fenced, and your dog will not get out. There is a shade canopy which will protect from the rain and some chairs to relax in. You may encounter holes because dogs love to dig in the soft turf and the hill of dirt, please let me know if you find some that my human and I have not gotten filled between visits and she will fix that! With so many trees, there will be branches down. I find that the dogs love to pick through those sticks. I try to keep on top of the really big ones, but if you see any let my human know. PLEASE NOTE: If your ball or other toys go over the fence, they now belong to my neighbor! PLEASE You must not go over the fence to get them!! I have other balls and will be happy for you to use them while here, if they go over, I can deal with him later! Thank you for your consideration of my neighbors. Please take pictures of your beautiful happy dogs and share here! Let's make other dogs and humans know there is a safe place to play! Thank you and we look forward to making dogs happy so that they can live their best lives! Additional note. WE have two safe yards (Never booked at the same time) completely fenced. The entry is also securely fenced. I need advanced notice if you wish to use the additional yard as it is close to my house. Your action of closing the gate upon entry and exit keep all dogs safe. Thank you all for your consideration! Come VIsit us at Mookie's Magic Meadows for a Magically fun time!

5(5)

This yard will continue to change and have more things added. The pool is in, and the clover lawn is coming in very nicely! We’ve got a sunsail up keeping shade over the pool during the heat of the day. We have mulch edging and plans for more greenery to be added. (A tree, some native grass clumps, and native opportunities for pollinators) There’s a covered deck with seating for two! Bring your cooler and relax while your dog runs around! Do some training in a large fenced in space! Grab some bags of ice and dump them in the pool for your husky or mountain dog! We’ve got some agility equipment upon request, and a sprinkler can be running when you get here! Safe for small dogs, reactive dogs, and escape artists.

5(312)

Our place is peaceful and fun to explore. Great for dogs of all temperaments. We have a private parking area with a double gated system to keep everyone safe. Fully fenced area with beautiful views. A great space for all dogs with all energy levels. There is a large willow tree that provides amazing cool shade during the warm months and protection from the weather during rainy months. There is some standing water in parts of the fields during rainy seasons. Please pick up after your dogs. There are fruit trees on site. Feel free to take as much as you would like for yourself, your livestock or for compost! If you loved your visit, please share your experience with family and friends! **Interesting ecological fact if you see rainbow coloring on top of some of the standing water… it is NOT from chemicals or an oil slick. Here’s the explanation. 🙂 A common naturally occurring oily sheen originates from the seed cones of cypress trees. The cones usually fall into the water below the cypress, and an obvious rainbow sheen forms on the surface around the seed pod. In puddles of woodlands or around the edges of stagnant or very slowly moving water, it is common to find sheens covering the water in and about leaves and other vegetation. It is tempting to wonder what form of pollution resulted in the sheens, but the answer is microscopic - and natural. Tiny iron-loving bacteria of many types may be involved. A common tale is that some species of bacteria that live in areas with no oxygen (anaerobic conditions) get their energy by converting Ferric Iron (Fe III) to Ferrous Iron (Fe II) (chemists call this process reduction). As the Ferrous Iron moves through the ground water, it encounters water with oxygen, chemically fuses with the oxygen (chemists call this oxidation), then precipitates (separates from the water) and floats on the surface as a colorful sheen. There are species of bacteria that may help accelerate the oxidation process, and the most common is Theobacillis ferroxidans. At times, a significant area of the water’s surface may be covered and the sheen is as reflective as a mirror, having little rainbow-effect.