Why Does My Cat Pee on Bags?

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Finding your cat peeing on plastic bags or other household items can be confusing and frustrating for cat owners. This common feline behavior happens for a variety of reasons. While we can’t get inside a cat’s mind to understand their motivations, we can examine the most likely explanations for this peculiar habit.

Why Does My Cat Pee on Bags

Cats are naturally clean, well-groomed animals. They instinctively bury their waste after using the litter box. So why would a cleanly cat start urinating on plastic bags or laundry piles?

Medical Reasons for Peeing on Bags

One of the first things to rule out is a medical condition causing the litter box avoidance. Cats don’t miss the litter box without a reason. There are various health problems that can lead to inappropriate urination.

Urinary Tract Infections

A urinary tract infection (UTI) is a common cause of litter box avoidance. With a UTI, there is bacteria in the bladder or urethra causing irritation and inflammation. This creates a frequent, urgent need to urinate. The cat may not make it to their box or be able to hold it until they get there.

Signs of a possible UTI include:

  • Frequent urination
  • Only passing small amounts of urine
  • Vocalizing or showing signs of pain before or during urination
  • Blood in the urine
  • Peeing outside the litter box

Bladder or Kidney Stones

Bladder stones or kidney stones can cause a partial or complete blockage of the urinary tract. This typically leads to difficulty and pain when urinating. The cat associates that pain with the litter box and starts peeing elsewhere.

Symptoms of stones include:

  • Frequent attempts to urinate
  • Only passing a small amount of urine
  • Crying out while urinating
  • Blood in the urine
  • Peeing outside the litter box

Kidney Disease

Kidney disease is common in older cats. Damaged or failing kidneys can’t concentrate urine properly. This leads to an increased urge to urinate. The cat may not always make it to the litter box in time.

Signs of kidney problems include:

  • Increased thirst and urination
  • Urinating in inappropriate places
  • Weight loss
  • Poor coat condition
  • Bad breath
  • Lethargy


Feline diabetes leads to excess glucose in the blood. The cat tries to eliminate the extra glucose through the urine, causing them to pee more frequently. They may pee on bags or laundry if the litter box isn’t reachable in time.

Diabetic symptoms include:

  • Increased thirst and urine output
  • Urinating outside the litter box
  • Increased appetite
  • Weight loss

Any signs of discomfort, difficulty, or blood when peeing warrants an immediate trip to the vet. Treatment for infections, stones, kidney disease, diabetes, etc. should stop inappropriate peeing as long as it’s addressed promptly before behavior patterns form.

Behavioral Reasons for Peeing on Bags

Sometimes the reason for the litter box avoidance is purely behavioral. Cats are creatures of habit. Anything that disrupts their routine can cause stress. A stressful change may lead to litter box avoidance. Common causes include:

Conflict with Another Cat

Adding a new cat or pet to the home can set off the resident cat. The new family member disrupts the balance of power. The resident cat may start peeing on bags or laundry piles to lay claim to their territory. This is a way to mask the new scent and assert themselves in an environment now filled with change.

Stress from Visitors

If strangers visit the home, the host cat may feel anxious and insecure. They start urine marking territory in response to those they view as invaders. Placing a pheromone diffuser in the home before visitors come can help reduce stress.

Relocation Stress

Moving to a new home is extremely stressful for cats. They are creatures of habit who don’t like change. Urinating on objects helps them spread familiar scent in an unfamiliar home. This relieves anxiety during the transition. Making sure to bring familiar toys, bedding, etc. can help ease relocation stress for cats.

New Baby Stress

A new baby is a huge adjustment for pets. Keeping the cat’s routine consistent is key. Ensure they still have their dedicated sleeping and feeding spots. Give them lots of affection time. Provide places to hide if they need alone time away from the baby. These steps help reduce litter box avoidance.

Litter Box Anxiety

Sometimes cats develop a fear or aversion to the litter box after a frightening experience while using it. Loud noises like nearby thunder or fireworks can spook a cat in the litter box. So can confrontation with another pet. These cats then refuse to risk scary encounters again by avoiding the litter box.

Separation Anxiety

Cats with separation anxiety may pee on their owner’s clothing or belongings. This helps them feel connected by spreading their scent on familiar items that smell like “their” human. Ensuring the cat has proper stimulation and doesn’t spend too many hours alone can help prevent separation anxiety.

Litter Box-Related Reasons for Peeing on Bags

Sometimes the root of the peeing problem can be traced back to the litter box itself. When the box isn’t up to a cat’s standards, they look for alternatives.

Litter Box Location

Cats want privacy when toileting. If the box is in a high-traffic or noisy area, they may opt out. Make sure boxes are in quiet, low-activity rooms.

Dirty Litter Box

Scoop waste from boxes daily, otherwise cats will seek cleaner spots. Change all litter every 1-2 weeks to control odors. Wash boxes monthly with soap and hot water.

Disliked Litter Type

Try different litters to find one your cat likes. Clumping, sandy types are ideal. Avoid scented, dusty, or coarse litters that feel unpleasant on paws.

Crowded Litter Box

Multi-cat homes need 1 more box than the number of cats. Spread boxes throughout the home so each cat has their own.

Difficulty Accessing

Senior cats may struggle climbing into a box with high sides. Try a lower-entry box or one with ramps. Larger, open boxes are easier to access.

Presence of Litter Box Liner

Some cats dislike litter box liners. The plastic lining can make them think anywhere else plastic (like a bag) is an ok potty spot.

Key Takeaway: When you identify what about the litter box situation is unsuitable for your cat, you can make changes to resolve the problem. Having clean accessible boxes they like encourages litter box use.

How to Stop Cats from Peeing on Bags

Now that you know why kitty might choose to pee on a bag instead of their box, what should you do about it? Here are ways to remedy inappropriate urination:

  • Get a veterinary exam to rule out medical issues causing the behavior
  • Add extra litter boxes around the home, especially near problem areas
  • Try new litters until you find one your cat likes using
  • Scoop waste from litter boxes daily, change litter regularly
  • Clean any soiled areas with an enzymatic cleaner to remove odors
  • Determine and address sources of cat anxiety or stress
  • Restrict access to any tempting items like bags
  • Try calming supplements like Feliway to reduce stress
  • Reward litter box use with praise and treats
  • Never punish your cat for peeing outside the box

With some patience and detective work, you can get to the bottom of why your cat is peeing where they shouldn’t. By making the litter box situation more appealing and addressing any underlying issues, you can redirect them to use the box properly.


Is it normal for cats to pee on bags?

It’s common but not technically normal. Healthy, happy cats with adequate litter facilities will consistently use the box. Peeing on objects instead reflects an underlying problem that needs addressing.

Why does my cat only pee on plastic bags?

Plastic bags are soft and crackly, which some cats find irresistible. The chemical scent of plastic may smell intriguing. The texture and odor likely attract the cat, while providing an easy-to-dig surface to cover their waste.

Why does my cat keep peeing on clothes?

Laundry piles on the floor are inviting targets. The soft, absorbent fabric feels good under paws. The scents cling to fabrics, so cats pee on clothes to mark territory with their odor. Medical issues can also cause clothes-peeing.

How do I get my cat to stop peeing on everything?

Determine what’s causing it – stress, dislike of litter, medical problem, etc. – and address the issue. Clean soiled areas thoroughly with enzymatic cleaners. Try different litters and more boxes. Restrict access to problem items. Use calming aids. Reward proper litter box use.

Why does my cat pee right in front of me?

Marking territory and release of tensions are reasons for this. The cat is communicating with you via their peeing habit. Best to get them a full veterinary assessment to be sure it’s not indicative of discomfort or illness.


Cats gravitate towards peeing on plastic bags, laundry, and other household items when something about their litter box situation is unacceptable. Health conditions can also send them looking for alternatives. While frustrating for owners, this common cat behavior isn’t random. It reflects an underlying issue that deserves attention.

With some patience, investigative skills, and adjustments, owners can identify causes and implement solutions. Medical treatment, stress reduction techniques, additional clean litter boxes, new cat-preferred litters, blocking access to enticing targets, and thorough cleaning can all help redirect your cat back to peeing exclusively in the litter box.

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Sarah Williams
Sarah Williams

As a proud cat owner, I can't imagine life without my kittens. Ever since I adopted my first cat, Fluffy, as a little girl, I've been hooked on everything cats. Now as an adult, I'm lucky enough to share my home with not one, but three lovable kitties - Fluffy, Mittens, and Tigger. They bring me amusement and comfort with their silly behavior and personalities.

Fluffy, my first cat, is now 15 years old but still acts like a playful kitten. She loves nothing more than a good game of chase the mouse toy or bat the pom poms around the house. Despite her age, she pounces around with astonishing agility. Fluffy also enjoys curling up on my lap for naptime and kneading her paws into my legs as I gently stroke her soft fur.

Mittens and Tigger are brother and sister from the same litter I adopted 5 years ago. They love to play fight, chasing each other and wrestling over toys. Mittens is the more timid one - she likes to hide under the bed when strangers come over. But once she gets comfortable, she'll come out for ear scratches. Tigger, on the other hand, is bold and adventurous. He'll explore any space and make friends with anyone. But at the end of the day, these two are the best of friends and love snuggling up for naps together.

As any cat owner knows, living with cats is a constant adventure. As cat admirer I love sharing my experiences and cat tips with others. Stay tuned for more tales, photos and insights into life with the most marvelous mammals - cats!