Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Why Does My Cat Keep Going to Their Litterbox (But Nothing Happens)? Vet Approved Advice

Share

orange cat beside litter box

Over 37% of households in the United States have invited a cat into their homes; that is over 45 million households! About 63% keep their pets indoors exclusively. That’s a good thing, too, since it gives owners a heads-up if something is wrong, such as unusual litter box behaviors. Cats are creatures of habit. They also have distinct preferences for cleanliness, litter type, and the number of boxes.

The causes of litter box issues are often either behavioral or medical in origin. While the former may not seem as serious, they are nevertheless unsettling. Unfortunately, these problems can increase a pet’s chances of being given up over four times if it’s a weekly occurrence. The latter type can become serious if left untreated.

Straining and failure to eliminate require a physical examination and tests to determine the cause and course of treatment. Many also make a pet vulnerable to a recurrence. Whatever the cause, it’s vital to determine why your cat is having problems using its litterbox, no matter what the reason.

divider cat paws 2 oct 2024

Types of Litter Box Issues

Elimination problems are serious and often require veterinary intervention. We’ll begin by clarifying the issue types to help you take the appropriate next steps. A cat may go to its litterbox and not use it. It may be something as simple as it is too long between maintenance sessions. If you’ve changed the kind of litter you buy, your pet may refuse to use it if the texture is different or it has a strong scent.

The problem may also occur because your cat can’t use it, whether it’s too deep or too small. If your kitty is arthritic, it may not be able to climb inside a box with tall sides. The same thing may occur if you replace the existing one with a box that has a hood or a top entry. Cats don’t like changes to their routine and might avoid using a litter box to express their displeasure.

Having more than one pet in the house often means more than one litter box. You’ve probably noticed the social hierarchy at work if you have two or more cats. It’s usually best resolved with one box per animal plus one additional one.

maine coon cat standing on top of litter box
Image Credit: Nils Jacobi, Shutterstock

divider 1 paws

The 7 Medical Reasons Your Cat Goes to the Litter Box But Nothing Happens

Cats are notorious for hiding medical conditions until they can’t keep them from you any longer. It’s a survival instinct not to show their vulnerability. You may learn that your kitty has been ill for a while before the signs become apparent.

1. Urinary Tract Infection (UTI)

Urinary tract infections (UTIs) are bacterial conditions treated with antibiotics. They occur when pathogens invade the usually sterile environment of your cat’s urinary system. UTIs are as painful in pets as they are in people. Typical signs include:

  • Straining to urinate
  • Small amounts of passed urine
  • Inappropriate elimination
  • Blood in your pet’s urine

Prevention is the best way to avoid future issues. That means scooping the litter box daily and providing fresh litter as needed. We also suggest emptying it completely at least every two weeks and thoroughly cleaning it. While cats get most of their moisture from their food, you should always provide fresh water daily.

cat pee on carpet
Image Credit: New Africa, Shutterstock

2. Feline Lower Urinary Tract Disease (FLUTD)

Feline lower urinary tract disease (FLUTD) is a catchall term that describes several conditions that vary in severity and causes. Signs, such as the inability to void urine in the litter box, are common with many of these disorders and not pathognomonic (indicative of one specific disease). Your veterinarian will typically start with a urinalysis and perhaps bloodwork to rule out various possible causes of the problem. Treatment depends on these findings.


3. Feline Idiopathic Cystitis (FIC)

The term idiopathic means a condition that either has an unknown cause or is peculiar to an individual. Cystitis describes inflammation of the bladder. FIC is sometimes challenging to treat since environmental factors like stress may play a role in its development. Avoiding abrupt routine changes, including the type of litter you buy, can make your pet feel more comfortable and less anxious.

If you’re concerned about your pet’s well-being, we recommend you contact a veterinarian.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money


4. Urinary Stones

Urinary stones (or uroliths) are crystal mineral deposits that can form in your pet’s urinary tract. The two most common types are calcium oxalate and struvite stones. The latter consists of chemicals, such as ammonia, phosphorus, or magnesium. They can irritate the urinary tract and set the stage for secondary bacterial infections. As you may surmise, it is a painful condition that may require emergency treatment.

Special diets can reduce the formation of struvites and help prevent recurrences. It’s worth mentioning that some plants, such as philodendron, contain calcium oxalate, too. Ingestion can cause oral irritation.


5. Urethral Obstruction

Uroliths or urethral plugs can cause an obstruction and interfere with urination, most often seen in male cats. A cat with this condition will show similar signs, such as going to the litter box often and straining when urinating. An obstruction requires immediate medical attention. It can affect kidney function and may cause severe electrolyte imbalances.

pouring cat litter
Image Credit: EvGavrilov, Shutterstock

6. Constipation

Constipation can occur if your pet frequently eats hard materials such as animal bones. Cats typically don’t drink a lot of water since they get most of the necessary moisture through their food. Nevertheless, it’s imperative to have fresh water available for your kitty at all times. Offering your pet a high-fiber diet can also prevent recurrences.


7. Intestinal Obstruction

An intestinal obstruction occurs if your cat eats something indigestible, causing a blockage. The condition is often painful. Your usually affectionate pet may become aggressive. It may hide, which is always a red flag for felines. Among other signs, your cat may become lethargic, vomit repeatedly, refuse to eat, or have trouble defecating. As with urethral obstructions, intestinal obstructions due to foreign body ingestion signify a medical emergency.

divider 3 paws

Summary

Litterbox issues can have behavioral causes. After all, cats have preferences, too. While you can correct some with simple modifications, some medical conditions can induce inappropriate urination. We strongly urge you to contact your vet if you notice your kitty having any difficulties using the box. Prompt action can help prevent it from becoming more serious and potentially life-threatening.


Featured Image Credit: jamesjoong, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

The 10 Common Causes of Sudden Death in Cats (And Which Ones Are Preventable)

Most cat owners don’t think much about heart disease, internal hemorrhage, or viral infections until they’re staring at an empty bed. Sudden death...

Ask Dr. Paola – Help! My Cat Suddenly Has Dandruff! (March 30, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

Your Cat Keeps Vomiting After Eating: Here’s What’s Going On

Cats vomit. It’s one of the less glamorous facts of life with a feline, and most cat owners have cleaned up more than...

Ask Dr. Paola – Help! My Cat Gets Diarrhea from Wet Food! (March 23, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

More related

meowbox Subscription Review in 2026: Our Experts Opinion

Review Summary What Is meowbox? How Does It Work? View this post on Instagram A post shared by meowbox (@meowbox) meowbox is a...

7 Interesting Facts About Tortoiseshell Cats for Feline Lovers

There are few cats as naturally striking as tortoiseshells. These animals look like actual works of art, except you won’t get kicked out...

Why Is My Cat Shaking While Purring? 4 Vet-Reviewed Reasons

Purring is the most common sound we hear from cats. No matter their size, all cats purr. Even kittens start purring when they’re...

10 Vet-Approved Tips for Keeping Your Cat Safe Over the Holidays

The holidays may be a magical and fun time for humans, but there are a lot of dangers that the holiday season brings...

Keep reading

Feline AIDS: Vet-Reviewed Signs, Causes & FAQ

Feline AIDS is a retrovirus infection that attacks a cat’s immune system by targeting the white blood cells. This causes their immune system to become weaker than normal, putting them at higher risk of illness for diseases and complications completely...

hand holding cat's feline AIDS test with positive result

Why Are My Cat’s Ears Cold? Vet-Approved Facts & Warning Signs

Cats savor sunlight. Their bodies radiate warmth, and most of them greatly dislike cold weather. Similar to our reptilian friends, felines tolerate temperatures around 60ºF to 70ºF but really thrive in the 86ºF to 100ºF zone. Even so, it isn’t...

close up cat ears pinna

Can Cats Eat Cucumber? Vet-Reviewed Nutrition and Safety

Some of our cats love to keep a close eye on our kitchen activities; after all, who knows when you might drop a tasty morsel on the floor for them to investigate? What if you chop a cucumber and drop...

Can Cats Eat Cucumber

Cats Peeing in Sink or Bath Tub? 7 Ways to Stop it!

One of the easiest parts about owning a cat is that they naturally train themselves to use a litter box. But what if your cat’s having issues with peeing outside the box and is choosing the sink or tub instead?...

cat-peeing-in-kitchen-sink

How to Be a Good Cat Owner: 10 Vet-Reviewed Tips

There’s a big difference between having a cat and being a good pet parent. Being a good cat owner is more than just putting out food and buying your cat a bed. So, whether you have a special feline in...

white cat with the owner

What Are E-Collars for Cats? Vet-Reviewed Types, Pros, Cons & FAQ

You may not immediately recognize the term “e-collar,” but you’ve definitely heard of them. You might know the e-collar by its more affectionately referred to term: the Cone of Shame. E-collars, or Elizabethan collars, as they’re more officially known, is...

cat wearing an ecollar

How to Tell If a Cat Is in Heat: 6 Vet-Verified Signs to Look For

We love our cats, but if you own an unspayed female cat, as soon as she’s old enough, she will go into heat and you will surely notice some quite evident changes in her. These hormonal changes begin around 4.5...

abyssinian-cat-meowing-at-the-sofa

5 Vet-Verified Reasons Why Cats Need a Scratching Post

A scratching post may seem like an unnecessary purchase for your cat, but this cat-friendly item is actually critical for your cat’s comfort, happiness, and their ability to develop their instincts. Plus, scratching posts help to keep the rest of...

Bengal cat plays with a plush mouse on a scratching post

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.