Dog Nappies: The Pros, Cons, UTI Risks & How to Use Them Safely

Dog nappies can make an enormous difference to the lives of dogs and the people who love them.

Whether your dog is living with urinary incontinence, recovering from surgery, managing a disability or experiencing age-related toileting concerns, the right nappy can help keep them comfortable while protecting your home from accidents.

But an important question often comes up:

Can wearing a dog nappy cause a urinary tract infection (UTI)?

The answer isn't a simple yes or no.

Dog nappies don't automatically cause UTIs. However, leaving a wet or soiled nappy on for too long can create hygiene problems, contribute to skin irritation and potentially increase infection risk.

At Dundies, we believe dogs with additional care needs deserve practical solutions and informed care. That's why we're sharing an honest look at the benefits, limitations and everyday considerations of using dog nappies.

What are dog nappies used for?

Dog nappies are designed to help manage urine leakage, faeces concerns and certain hygiene needs like heat.

They're particularly useful for:

• Urinary incontinence: Dogs who leak urine involuntarily, including while resting or sleeping.

• Senior dogs: Older dogs experiencing changes in bladder control or mobility.

• Dogs with disabilities: Dogs with neurological conditions, spinal injuries or other conditions affecting continence.

• Temporary care: Dogs recovering from certain illnesses or surgery, where nappy use is appropriate and approved by your veterinarian.

• Female dogs in heat: To help manage discharge, remembering that nappies do not prevent mating or pregnancy.

• Occasional accidents: As a temporary management tool while the underlying cause is investigated.

Nappies should never replace appropriate vet care, regular toilet opportunities or positive toilet-training. Dog nappies are a tool, not a substitute to proper care and training. 

The benefits of dog nappies

1. Supporting dogs with incontinence

Incontinence can happen for many reasons, including neurological conditions, hormonal changes and age-related health issues.

A properly fitted nappy can help manage leakage and allow dogs to continue enjoying their normal routines.

2. Protecting bedding, furniture and floors

Reusable pet nappies can help reduce urine accidents around the home, particularly for dogs who leak while resting.

This can make everyday care more manageable for families.

3. Supporting quality of life

For dogs with ongoing continence challenges, nappies can be part of a practical care routine that allows them to remain comfortable and involved in family life. The stress of managing long term incontinence for a pet family can often result in tough decisions such as euthanasia, using dog nappies helps owners keep their pets with them, alive, happy and included. 

4. Offering a reusable alternative

Washable nappies can reduce reliance on disposable products when used, washed and maintained appropriately.

Having enough clean nappies available for frequent changes is particularly important.

The disadvantages and risks of dog nappies

Although nappies can be incredibly helpful, they're not without limitations.

1. Moisture and skin irritation

Prolonged contact with urine or faeces can irritate the skin.

A damp nappy can contribute to redness, chafing, discomfort and skin inflammation, particularly if your dog has sensitive skin or limited mobility.

2. Hygiene and infection concerns

Urinary tract infections generally occur when bacteria enter the urinary tract.

Leaving waste in prolonged contact with the genital area is undesirable, and poor hygiene may increase infection risk in susceptible dogs.

However, a UTI cannot automatically be attributed to a nappy. Underlying medical conditions, anatomy and bladder function can also contribute.

3. Incorrect fit

A nappy that is too tight may rub or restrict comfortable movement.

A nappy that is too loose may leak, shift or cause friction.

Correct sizing is essential.

4. Masking a developing medical problem

Dogs wearing nappies may experience changes in urination that are less obvious to their owners.

Increased frequency, blood in the urine or straining can be harder to notice without regularly checking the nappy and observing toileting behaviour.

5. Extra laundry and ongoing care

Reusable nappies require regular washing and thorough drying.

They also need a consistent routine of changing, cleaning and checking your dog's skin.

Can dog nappies cause UTIs?

Dog nappies are not necessarily a direct cause of urinary tract infections.

A UTI develops when microorganisms, most commonly bacteria, infect part of the urinary tract.

Some dogs are more susceptible because of underlying conditions, impaired bladder emptying, anatomy or previous infections.

A nappy that stays wet or soiled for too long can create hygiene problems around the genital area, so prompt changes and appropriate cleaning are important.

The key takeaway: a well-fitting nappy can be a valuable care tool, but it is not a substitute for good hygiene or medical management.

If your dog experiences repeated UTIs, ask your veterinarian whether their continence condition, bladder emptying or another health issue needs further investigation.

Signs your dog might have a UTI

Watch for:

• Frequent attempts to urinate

• Straining or discomfort when urinating

• Blood in the urine

• Strong or unusual urine odour

• Increased licking around the genitals

• New or worsening accidents

• Changes in behaviour, appetite or energy

Some dogs may show very few obvious symptoms.

If your dog is straining but cannot pass urine, seek urgent veterinary attention. Urinary obstruction can be an emergency.

If you suspect a UTI, your vet may recommend urinalysis, urine culture or other investigations.

Do not start leftover antibiotics or attempt to diagnose a UTI based on urine smell alone.

How to use dog nappies safely: Dundies' FAP & CCC principles

At Dundies, we've developed two simple care frameworks to help dog parents manage nappy hygiene and comfort.

FAP — Fit, Aeration & Powder

F — Fit

A correctly fitted nappy should sit securely without digging into your dog's waist, groin or legs.

Poor fit can contribute to leaks, rubbing and discomfort.

Always follow the manufacturer's sizing instructions and check for redness, particularly when introducing a new style.

A — Aeration

Regular nappy-free time allows your dog's skin to dry and gives you an opportunity to inspect for irritation.

Where practical, allow time without a nappy in a clean, protected environment.

Washable puppy pads can help protect bedding and floors during these periods.

P — Powder

Friction and rubbing can be a concern for dogs who regularly wear nappies, especially around the legs, waist and tail.

Since developing our original FAP and CCC principles, we've introduced our ownDundies Pet Nappy Powder.

Made with a cornstarch base and food-grade ingredients, it's formulated specifically for pets and designed to help manage friction as part of a regular nappy-care routine.

Use only as directed, avoid creating airborne powder you or your dog could inhale, and discontinue use if irritation occurs. 

Although the formula is designed with incidental licking in mind, and is safe if consumed, it isn't intended to be eaten.

Explore Dundies Pet Nappy Powder

CCC — Cleaning, Changing & Creams

C — Cleaning

Gently clean your dog's skin when needed during nappy changes, using products appropriate for pets.

Make sure the skin is dry before fitting a fresh nappy.

Avoid harsh fragrances or products that may irritate sensitive skin. Leave those scented baby wipes on the shelf and opt for a water based product. 

C — Changing

Check nappies regularly and replace them promptly when wet or soiled.

Dundies' existing fitting guide recommends changes every 2–4 hours, or immediately when soiled. Some dogs will require more frequent changes depending on their leakage, skin health and veterinary care needs.

Never leave a heavily wet or faeces-soiled nappy on simply because it can absorb more.

C — Creams

Some dogs may benefit from an appropriate skin-protection product when managing irritation.

However, not all human barrier creams are safe for dogs, particularly if they may be licked or swallowed.

Speak with your vet about suitable products, especially if your dog has broken skin, an existing infection or persistent irritation.

Read the Dundies Fitting and Using Guide

Why the materials in your dog's nappy matter

The materials used in a dog nappy can influence comfort, fit, absorbency and leakage protection.

But no fabric can guarantee that a dog will avoid UTIs, skin irritation or other health issues.

Bamboo–cotton blends: softness and everyday comfort

Dundies reusable dog nappies feature a bamboo–cotton blend selected for comfort against your dog's skin.

Bamboo-derived fabrics are often associated with softness and moisture management.

Our material selection also considers the antibacterial and temperature-regulating characteristics of the fabric. antibacterial properties should not be interpreted as an ability to prevent urinary tract infections.

Even with thoughtfully selected fabrics, prompt nappy changes and good hygiene remain essential.

What is PUL, and why does it matter?

PUL stands for polyurethane laminate.

It's a fabric construction commonly used in reusable absorbent products because it combines a textile layer with a protective laminate. This is the waterproofing element that lays hidden inside Dundies nappies. 

Dundies uses premium waterproof and breathable PUL to help prevent leaks while supporting comfortable everyday wear.

The quality and performance of PUL can vary considerably between products.

Some laminates allow water vapour to pass through more readily than others, depending on their construction.

Waterproof and breathable doesn't mean moisture cannot build up inside a worn nappy.

Regular changes and appropriate nappy-free time remain important regardless of the outer material.

Is PUL the same as TPU?

Not exactly.

PUL describes a laminated fabric construction, while TPU, or thermoplastic polyurethane, is a type of material that can be used in a laminate. TPU is often cheaper than PUL and doesn't hold up as well to frequent washing and wear, you will often find TPU used in cheaper products on the market, it also tends to not be breathable like PUL due to the composition. 

When comparing nappies, it's more useful to consider the actual fabric quality, waterproof performance, breathability, flexibility, durability and comfort rather than relying on the label alone.

Reusable vs disposable dog nappies

Both options have advantages.

Reusable dog nappies

Pros:

• Washable and designed for repeated use

• Can reduce ongoing disposable waste

• Available in different sizes and styles

• May be economical for long-term continence management

• Can be part of a consistent care routine

Cons:

• Require washing and drying

• Need sufficient spare nappies for regular changes

• Absorbency and fit vary between products

Disposable dog nappies

Pros:

• Convenient for some short-term situations

• No laundering required

• Easy to pack for travel or occasional use

Cons:

• Ongoing replacement costs

• More single-use waste

• Fit, absorbency and skin comfort vary

The best choice depends on your dog's needs, your daily routine and your ability to change nappies promptly.

How many reusable dog nappies do you need?

There isn't one correct number.

Dogs who experience frequent leakage may need several changes throughout the day.

Consider how often your dog needs changing, how quickly nappies dry after washing and whether you need spare nappies for overnight care or outings.

Having enough clean nappies available is often more important than relying on one highly absorbent nappy for long periods.

When should you avoid using dog nappies?

Speak with your veterinarian before using nappies if your dog has:

• An active skin infection or open wounds in the nappy area

• Significant irritation or persistent redness

• Suspected urinary obstruction

• Recurrent UTIs without an established management plan

• A condition requiring specialised urinary or wound care

Stop using a nappy that causes rubbing, discomfort or worsening skin problems until the issue has been addressed.

Our approach at Dundies

Dundies was created because we believe dogs with additional care needs deserve practical products that support their quality of life.

Our reusable dog nappies are designed to support everyday continence management, with soft bamboo–cotton fabric and premium waterproof and breathable PUL. Dundies nappies were also pattern drafted in house which means you won't find anything on the market with the same cut, shape, fit and size as Dundies nappies, we're not a universal style mass produced in China that we have simply stuck our logo on. 

We've also developed our own pet nappy powder and practical care frameworks to help families build better nappy-care routines.

But we believe responsible product use matters just as much as product design.

That means choosing the right fit, changing nappies promptly, caring for your dog's skin and seeking veterinary advice whenever something changes.

A nappy should be part of your dog's care routine — not a replacement for one.

Explore Dundies Reusable Dog Nappies

Frequently asked questions

Can dogs wear nappies overnight?

Some dogs need overnight continence protection, but suitability depends on their health, leakage volume, skin condition and care needs.

Avoid leaving a wet or soiled nappy in place for prolonged periods. Ask your veterinarian for advice if your dog needs continuous overnight protection. Dundies nappies are safe to use overnight. 

Are reusable dog nappies hygienic?

They can be part of a hygienic routine when changed promptly, washed correctly, dried completely and fitted properly.

Reusability alone does not make a nappy more or less hygienic.

Do bamboo dog nappies prevent UTIs?

No. Bamboo-derived fabric should not be relied upon to prevent urinary tract infections.

Regular changes, good hygiene and veterinary management are more important.

Can dog nappies cause skin irritation?

Yes. Poor fit, rubbing, trapped moisture and prolonged exposure to urine or faeces can contribute to irritation.

Can I use nappies instead of toilet training?

Nappies should not replace appropriate toilet training, regular toilet opportunities or investigation of unexpected accidents.

What should I do if my dog develops redness while wearing nappies?

Remove the nappy, gently clean and dry the area, and check for rubbing or an incorrect fit.

If redness persists, worsens or involves broken skin, consult your vet before applying creams or other treatments.

This article provides general educational information and does not replace individual veterinary advice. If your dog has urinary symptoms, recurrent infections or difficulty passing urine, consult your veterinarian.