How to Deal With Puppy Potty Training Regression

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 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.

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:

1. Understand the cause of your companion’s indoor accidents.
2. Eliminate the scent of previous messes around your home.
3. 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.

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:

1. Blot up as much urine as possible with paper towels first
2. Saturate the area completely with enzymatic cleaner (don't just spray the surface)
3. Let it sit for 10-15 minutes (or whatever the bottle recommends)
4. 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.

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.

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

Related Articles

• How to Potty Train a Dog
• Puppy Potty Training: How Long Does House Training Take?
• House to House Train an Adult Dog | Adult Dog Potty Training
• Dog Training 101: A Beginner’s Guide

Frequently Asked Questions: Puppy Potty Training Regression