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How to Deal With Puppy Potty Training Regression

How to Deal With Puppy Potty Training Regression

Haley Young

February 16, 2026

Dog Training

How to Deal With Puppy Potty Training Regression thumbnail

You thought those dreaded middle-of-the-night potty breaks were over. You were finally free from cleaning up puppy puddles. Then, suddenly, your six-month-old who's been accident-free for weeks starts peeing on your rug again.

Sound familiar? Here's the thing: potty training regression hits almost every dog owner at some point—and it's usually fixable in under two weeks. Whether you're dealing with a 4-month-old puppy going through teething, a 7-month-old male hitting adolescence, or even a 2-year-old adult dog suddenly having accidents, we'll walk you through exactly what's happening and how to fix it.

Jump Ahead: Puppy Potty Training Regressoin

What Is Potty Training Regression?
Potty Training Regression by Age: What to Expect
Why Is Your House-Trained Dog Having Accidents?
How to Clean Dog Urine with Enzymatic Cleaners (And Why Regular Soap Fails)
Go Back to Potty Training Basics (Yes, Really)
Puppy Potty Training Regression: When to Get Professional Help
You're Not Alone in Potty Training Your Pup
Frequently Asked Questions: Puppy Potty Training Regression

What Is Potty Training Regression?

Potty training regression is when a previously house-trained dog suddenly starts having accidents indoors again. Here's what it typically looks like at different ages:

4-5 months: "Puppy brain" moments during rapid development, often coinciding with teething

7-9 months: Hormonal surges (especially in males) leading to marking behavior

10-12 months: Adolescent testing of boundaries

Adult dogs (1+ years): Usually medical issues or major life changes

The good news is that in the majority of cases, this is temporary and completely fixable.

Simply put, potty training regression is when a dog who’s already been house trained—and who previously seemed successful at holding their bladder and bowels for consistent intervals—suddenly starts using the bathroom inside again. These accidents might be triggered by specific things (more on that in the next section) or seem to come out of nowhere.

While potty training regression is unpleasant, the behavior is actually a common issue. Many owners report their older puppies regressing to an earlier phase of their house training abilities between four months to one year of age. Elderly dogs often struggle with incontinence, too. There are a variety of reasons for the behavior.

Most pet parents have experienced at least some level of house training regression, and we’ve all made it through! You’ve got this.

A young dog lifts his leg to pee on a tree

Potty Training Regression by Age: What to Expect

Regression has many causes, and most are easy to fix: From puppy brain farts to changes in routine, most potty training regressions are temporary. A vet visit can rule out medical issues, especially for adult dogs. If you're worried about potty training regression for your own young pup, here's what to expect by age.

4-5 Month Regression (The "Puppy Brain Fart" Phase)

Your puppy's brain is growing faster than you can say "go potty." They're literally forgetting things they knew last week. Remember, they're literally new to this world! Imagine if we tried to potty train human babies almost immediately after birth?

What's happening: Rapid physical and mental development means their brain is prioritizing growth over remembering where the bathroom is.

Teething connection: Many owners notice accidents increase when puppies lose their baby teeth. The discomfort makes it harder for them to hold it.

Quick fix: Go back to 2-hour potty breaks for one week, even if it feels like a step backward.

7-9 Month Regression (The Teenage Rebellion)

Welcome to dog adolescence. If you have a male puppy, you might notice he's suddenly discovered he can lift his leg, and everything (unfortunately) looks like a fire hydrant.

What's happening: Testosterone kicks in (even if you plan to neuter), leading to marking behavior and selective memory about house rules.

Quick fix: Restrict access to rooms you can't supervise. Use enzymatic cleaner religiously. Catch them in the act and immediately redirect outside.

10-12 Month Regression (Boundary Testing)

Your dog knows the rules. They're just… testing if you still care about enforcing them.

What's happening: Final adolescent phase where dogs push boundaries to see what they can get away with.

Quick fix: Resume rewards for outdoor potties (yes, even though they're "too old" for treats). Consistency wins. And honestly, who is too old for treats?

Adult Dog Regression (1+ Years)

If a fully house-trained adult dog suddenly starts having accidents, this is NOT normal teenage stuff. You need to rule out medical issues first.

Red flags that need a vet visit:

Accidents in their sleeping area (dogs avoid this unless they physically can't help it)

Increased thirst alongside accidents

Straining or signs of pain when urinating

Accidents within hours of being outside

Common medical causes: UTIs, bladder stones, diabetes, kidney disease, age-related incontinence

Why Is Your House-Trained Dog Having Accidents?

You should treat potty training regression in puppies the same way you’d go about house training a newly adopted adult dog:

Understand the cause of your companion’s indoor accidents.

Eliminate the scent of previous messes around your home.

Go back to a basic house training process.

For Puppies Under 1 Year: Developmental Stages (60% of cases)

You didn't fail. Your puppy's brain is just temporarily overloaded.

Just like human children, puppies go through various developmental stages that can impact their behavior, including their potty training habits.

Hormonal fluctuations, especially during adolescence, can sometimes lead to temporary setbacks in house training. If your pup is going through a growth spurt, they might seem a little more forgetful than usual, and that includes remembering their potty training.

Teething also can be a surprisingly disruptive period for puppies, and it can sometimes affect their potty training. The discomfort and pain associated with teething can make it difficult for puppies to hold their bladder or bowels for as long as they usually would.

Teething can cause potty training setbacks, but with consistent training and positive reinforcement, puppies typically get back on track once the teething phase is over. Providing safe chew toys can help alleviate teething discomfort and potentially minimize potty training disruptions.

For All Ages: Medical Issues (15% of cases, but 60% for adult dogs)

In some cases, potty training regression can be a sign of an underlying medical issue. Conditions like urinary tract infections (UTIs), incontinence, or inflammatory bowel disease can cause a dog to have accidents.

See a vet immediately if:

Accidents started suddenly in a previously reliable adult dog

Your dog pees in their bed or crate

You notice increased drinking

There's blood in urine or straining

For All Ages: Environmental Stress (20% of cases)

Stress and anxiety can play a significant role in potty training regression. Changes in routine, a new pet or family member, moving to a new home, or even loud noises like fireworks can be stressful for dogs. Stress and anxiety can manifest in various ways, including accidents inside the house.

Stress often looks like:

New baby or pet in the house

Moving homes

Construction noise

Changes to work schedule

Loss of a family member

Consider booking a Sniffspot to give your dog a safe and enriching place to de-stress. If you suspect stress is the culprit, try to identify and address the underlying cause. Creating a calm and predictable environment for your dog can help reduce anxiety and minimize accidents.

For All Ages: Inconsistent Training (5% of cases)

Sometimes, potty training regression isn't related to developmental stages at all. It can be a direct result of inconsistent training or rewards. It's easy to become less diligent with reinforcement once your dog seems reliably house-trained.

However, inconsistent rewards can lead to confusion and accidents. Make sure you keep rewarding your dog for going potty outside, even if they've been accident-free for a while. This reinforces the desired behavior and helps prevent regression.

Just take a few minutes to think about your house training routine. Is everyone in your family on the same page? Are you offering your pup frequent breaks? Is there a chance you haven’t noticed signals that your dog needs to go out? You might just need to clean up your communication.

🐶 Need a safe space for potty training practice? Many dogs struggle with distractions in regular dog parks, making it harder to establish good habits. Browse private Sniffspot yards where your pup can focus on training without other dogs interrupting. [Find a spot near you →]

How to Clean Dog Urine with Enzymatic Cleaners (And Why Regular Soap Fails)

Dogs have a natural instinct to pee where they've peed before. That's why your dog picks the same tree on every walk, and it's also why one accident in your living room can quickly turn into a permanent bathroom spot if you don't clean it properly.

Regular soap and water won't cut it here. Your dog's nose is 10,000 to 100,000 times more sensitive than yours. Even if you can't smell anything, your dog can still detect the urine marking they left behind.

best cleaners for dog potty training regression

You need enzymatic cleaners. These special formulas contain enzymes that break down the proteins in urine, completely eliminating the scent instead of just covering it up.

Think of it this way: you're not just cleaning the visible mess. You're erasing the invisible "welcome mat" your dog unintentionally laid down.

Recommended enzymatic cleaners:

Rocco & Roxie Stain and Odor Eliminator

Nature's Miracle

Simple Solution Extreme Stain and Odor Remover

How to use them:

Blot up as much urine as possible with paper towels first

Saturate the area completely with enzymatic cleaner (don't just spray the surface)

Let it sit for 10-15 minutes (or whatever the bottle recommends)

Blot dry and let air dry completely

For carpets and upholstery, you might need to treat the area multiple times to completely eliminate deep-set odors.

A small puppy sits next to a puddle of pee on a puppy pee pad

Go Back to Potty Training Basics (Yes, Really)

If you've ruled out medical conditions and identified the cause of regression, your way forward is simple: pretend your dog is a brand-new puppy again.

We know it's frustrating to feel like you've lost progress. But here's the good news: re-training almost always takes less time than your initial house training process. Most dogs get back on track within 1-2 weeks with consistent basics. Here's your reset plan:

Feed on a Schedule

A predictable eating schedule = a predictable bathroom schedule.

What to do:

Feed at the same times every day

Track when they eat and when they eliminate to spot patterns

Account for extra treats that might affect their bathroom timing

Provide free access to water, but note when they drink more than usual (after playing, chewing, etc.)

Bonus: You'll immediately notice any appetite or digestive changes to flag for your vet.

Take Your Dog Outside Every 2-3 Hours (At First)

Yes, even if your dog's bladder can physically hold it longer. During retraining, frequency is key.

When to take them out:

Every 2-3 hours throughout the day

Immediately after waking up (from nighttime sleep or naps)

Within 15-30 minutes after meals

Right after play sessions or excitement

Once they've had zero accidents for 3-5 days straight, you can slowly increase the time between breaks by 30-minute intervals.

Use the Same Potty Spot Every Time

Remember how dogs are drawn to spots where they've eliminated before? Use this instinct to your advantage outside.

Walk your dog in a small circle in the same corner of your yard or the same spot on your block. This creates a predictable pattern and helps them understand where it's appropriate to go.

Struggling to find the right potty training environment? Some dogs get distracted at regular dog parks, making it harder to establish good bathroom habits. Browse private Sniffspot yards where your pup can focus on their business without interruptions from other dogs. Many hosts have designated potty areas that can help speed up training. [Find a training-friendly spot →]

Reward Every Single Success (Even Though They're "Too Old" for This)

The second your dog finishes peeing or pooping outside, throw a party. Use small training treats, enthusiastic praise, or a quick game with their favorite toy.

Important timing note: Wait until after they've completely finished eliminating before rewarding. You want them to fully empty their bladder (which can take 30+ seconds in older puppies and adult dogs) before you interrupt with treats or play. This ensures they associate the reward with the complete action, not just starting to pee.

During regression retraining, every outdoor success needs acknowledgment. Don't assume they "know" this already.

Supervise Constantly or Use Confinement

Dogs rarely have accidents right in front of you. They sneak off to another room or wait until you're distracted. (Sneaky, right?)

Your options:

Keep them in the same room as you using baby gates or exercise pens

Use a properly sized crate when you can't actively watch them (dogs avoid peeing where they sleep)

Leash them to you while moving around the house so you can catch any pre-potty signals

Exception for long absences: If you absolutely must leave your dog alone longer than they can hold it, set up designated potty pads in a specific area far from their sleeping and eating spots. This isn't ideal for retraining, but it's better than forcing them to have accidents.

Need a safe space for extended potty training sessions? Book a private Sniffspot yard for an hour and practice the entire routine in a distraction-free environment. Many dogs learn faster in new spaces without the "memory" of previous indoor accidents. [Browse yards near you →]

Watch Their Water Intake (But Don't Restrict It)

Dogs need free access to water. But keeping track of when they drink heavily can help you predict bathroom needs.

If your dog consistently guzzles water throughout the day, try spreading meals into smaller, more frequent portions. This can help regulate their intake and create more predictable bathroom timing.

🚩 Red flag: If your dog suddenly starts drinking excessively, this could indicate diabetes, kidney disease, or other health issues. Call your vet immediately if you notice significant changes in water consumption.

Potty training basics

Puppy Potty Training Regression: When to Get Professional Help

Still struggling after 2-3 weeks of consistent basics? Time to call in reinforcements.

Start with your vet (if you haven't already). Even if your dog was previously cleared, persistent accidents warrant a second checkup. Sometimes underlying issues don't show up in the first exam.

Then find a certified trainer. A professional can observe your specific situation and identify gaps you might be missing. They'll create a customized plan based on your dog's age, history, and regression triggers.

Looking for a trainer? Many Sniffspot hosts are professional trainers or can recommend trusted local experts. Book a private yard for a one-on-one training session where your dog can focus without distractions. [Find training-friendly spaces →]

You're Not Alone in Potty Training Your Pup

Potty training regression is incredibly common. Over 50% of our Sniffspot community reported at least one potty training regression, and that percentage is higher in puppies.

The vast majority got back on track within 1-2 weeks using the basics outlined above. You can too.

Key reminders:

Medical issues are the #1 cause in adult dogs (get that vet check!)

Developmental regressions (4-5 months, 7-9 months) are completely normal

Consistency beats perfection so just stick with the routine

Enzymatic cleaners are non-negotiable

When in doubt, increase potty break frequency

Expert review: This article was reviewed by Lindy Langum, Certified in Canine Studies (CSS), Founder of Summit Assistance Dogs

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Frequently Asked Questions: Puppy Potty Training Regression

How long does puppy potty training regression last?

Most puppy potty training regressions resolve within 1-2 weeks if you immediately return to basics with consistent schedules and frequent potty breaks. Adolescent regressions (typically 7-9 months) might take 3-4 weeks since they're driven by hormonal changes. If accidents continue beyond a month despite consistent training, schedule a vet visit to rule out medical issues like UTIs or parasites that are common in young puppies.

Why is my potty trained puppy suddenly having accidents?

Sudden accidents in a previously house-trained puppy usually happen for one of these reasons:
Developmental stages (4-10 months): Rapid brain growth, teething discomfort, hormonal changes during adolescence. Increased crate time too quickly: You extended the time between potty breaks before they were ready. Inconsistent training: Stopped rewarding outdoor potties, irregular bathroom schedule. Environmental stress: Moving homes, new pet or baby, loud noises, changes in routine. Medical issues: UTIs, parasites, digestive upset.

For puppies under 6 months, developmental regression is most common. For puppies 6+ months, check for medical issues if accidents are sudden and frequent.

At what age do puppies regress in potty training?

Puppies typically experience regression at three predictable ages: 4-5 months: Rapid brain development and teething pain make them "forget" their training temporarily. This is the most common regression phase. 7-9 months: Hormonal surges (especially in male puppies) trigger marking behavior and boundary testing. 10-12 months: Final adolescent phase where they test if you still enforce the rules.

These regressions are completely normal and don't mean you failed at training. Most puppies just need 1-2 weeks of going back to basics (more frequent potty breaks and resumed rewards).

Is it normal for a 6 month old puppy to regress in potty training?

Yes, this is extremely common. Six months falls right in the middle of adolescence, when puppies experience hormonal changes and brain development that can temporarily disrupt their house training.

Male puppies around 6-7 months often discover they can lift their leg to mark, which feels different (and more exciting) than regular peeing. Female puppies might have accidents related to their first heat cycle approaching.

The fix: Restrict access to rooms you can't supervise, resume treating for outdoor potties, and increase bathroom breaks to every 2-3 hours for one week. Most 6-month-old puppies bounce back quickly.

How do you fix potty training regression in puppies?

Follow this puppy-specific reset plan: Check for medical issues if accidents are sudden (UTI, parasites, digestive upset). Clean all accidents with enzymatic cleaners to eliminate scent markers that draw them back. Return to puppy schedule with potty breaks every 2-3 hours, plus after waking, eating, and playing. Resume high-value rewards for every outdoor success, yes, even though they "know" this already. Use confinement (crate, playpen, baby gates) when you can't actively supervise. Stick to feeding schedule to make bathroom timing predictable.

Most puppies get back on track within 1-2 weeks. If regression continues beyond 3 weeks, consult your vet and consider working with a certified puppy trainer.

Can teething cause potty training regression in puppies?

Yes! Teething is a very common trigger for potty training regression, especially between 4-6 months when puppies lose most of their baby teeth. Why teething causes accidents: Pain and discomfort make it harder for puppies to hold their bladder as long. Teething puppies are often mopey and off their food, which disrupts their normal bathroom schedule. Their brain is focused on physical development, making them "forgetful" about house training rules.

Signs your puppy is teething: Increased chewing on everything, more drooling than usual (especially after waking up), blood on toys or loss of visible baby teeth, mopey behavior or decreased appetite, and swollen or tender gums. The good news: teething regression is temporary. Most puppies return to their normal house training within 1-2 weeks once the painful phase passes. Just go back to more frequent potty breaks during this period.

What is the best enzymatic cleaner for puppy urine?

The most recommended enzymatic cleaners for completely eliminating puppy urine odor are Rocco & Roxie Stain and Odor Eliminator (most popular choice among dog owners), Nature's Miracle Stain and Odor Remover (widely available, budget-friendly), and Simple Solution Extreme Stain and Odor Remover (for tough, set-in stains).

Regular household cleaners won't work because they only mask the smell to human noses. Puppies can still detect the urine scent with their much more sensitive noses, which encourages them to pee in the same spot again.

Enzymatic cleaners actually break down the proteins in urine, completely eliminating the odor marker. Saturate the area completely (don't just spray the surface) and let it sit for 10-15 minutes before blotting dry.

Why does my puppy pee inside right after being outside?

This frustrating behavior usually happens for one of these reasons: Your puppy got distracted outside where puppies have short attention spans, and if there are interesting smells, sounds, or sights in the yard, they might "forget" why they went outside in the first place. They didn't fully empty their bladder where puppies sometimes do a quick pee outside, then have more left when they come back in (wait at least 3-5 minutes outside to ensure they fully finish). The outdoor spot is uncomfortable where rain, cold, wet grass, or scary noises might make your puppy rush through their business without fully emptying. Or they're asking for attention or playtime where some puppies learn that peeing inside gets a reaction (even negative attention is still attention).

The fix: Stay outside longer (5-10 minutes), walk them in a small circle in the potty area to encourage elimination, and throw a huge party with treats when they go. Don't bring them inside until they've actually peed or pooped.

How often should a 5 month old puppy go outside?

A 5-month-old puppy should go outside for potty breaks every 3-4 hours during the day (following the general rule of one hour per month of age), immediately after waking up from nighttime sleep or naps, 15-30 minutes after every meal, right after play sessions or excitement, and before bed and once during the night if needed.

During potty training regression, increase this to every 2-3 hours even if your puppy can physically hold it longer. Frequent success builds the habit back faster.

Small breed puppies might need even more frequent breaks due to smaller bladders and faster metabolisms. If your 5-month-old puppy is still having accidents on a 3-4 hour schedule, drop back to every 2 hours for another week.

Should I use puppy pads during potty training regression?

Generally, no, especially if your puppy is over 6 months old. Puppy pads can confuse the message that "inside = no peeing" and make regression last longer. When pads might be okay: You live in a high-rise apartment and physically can't get outside every 2-3 hours, your puppy is under 4 months and still building bladder control, or you need a temporary solution during extreme weather.

If you must use pads during regression: Place them in one designated area far from sleeping/eating spaces. Don't scatter them around the house. Gradually move them closer to the door, then outside. Phase them out as soon as possible. The goal is to establish a clear pattern: bathroom happens outside, not inside on absorbent surfaces. Pads blur that line and can extend the regression period.

Haley Young

February 16, 2026

Dog Training

Haley Young

About the author

Haley is a self-proclaimed dog nerd and full-time freelance writer. She's passionate about connecting with fellow pet lovers through training and lifestyle content — learning from professional trainers, animal cognition researchers, and other experts along the way. Haley travels the country full time with her rescue dog, a shy blue heeler, and loves conquering new situation as a team. Dog-friendly national parks, hiking trails, and Sniffspots have become favorite places across the country! When she isn't writing or playing an intense game of tug with her cattle dog, you can find her reading books (her favorite author is late ethologist Frans de Waal), listening to a range of animal-related podcasts, and having conversations about (you guessed it) the many ways other creatures impact our lives.

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How to Deal With Puppy Potty Training Regression

Jump Ahead: Puppy Potty Training Regressoin

What Is Potty Training Regression?

Potty Training Regression by Age: What to Expect

4-5 Month Regression (The "Puppy Brain Fart" Phase)

7-9 Month Regression (The Teenage Rebellion)

10-12 Month Regression (Boundary Testing)

Adult Dog Regression (1+ Years)

Why Is Your House-Trained Dog Having Accidents?

For Puppies Under 1 Year: Developmental Stages (60% of cases)

For All Ages: Medical Issues (15% of cases, but 60% for adult dogs)

For All Ages: Environmental Stress (20% of cases)

For All Ages: Inconsistent Training (5% of cases)

How to Clean Dog Urine with Enzymatic Cleaners (And Why Regular Soap Fails)

Go Back to Potty Training Basics (Yes, Really)

Feed on a Schedule

Take Your Dog Outside Every 2-3 Hours (At First)

Use the Same Potty Spot Every Time

Reward Every Single Success (Even Though They're "Too Old" for This)

Supervise Constantly or Use Confinement

Watch Their Water Intake (But Don't Restrict It)

Puppy Potty Training Regression: When to Get Professional Help

You're Not Alone in Potty Training Your Pup

Related Articles

Frequently Asked Questions: Puppy Potty Training Regression

How long does puppy potty training regression last?

Why is my potty trained puppy suddenly having accidents?

At what age do puppies regress in potty training?

Is it normal for a 6 month old puppy to regress in potty training?

How do you fix potty training regression in puppies?

Can teething cause potty training regression in puppies?

What is the best enzymatic cleaner for puppy urine?

Why does my puppy pee inside right after being outside?

How often should a 5 month old puppy go outside?

Should I use puppy pads during potty training regression?

Haley Young

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