Can cat litter cause urinary blockage?
Emily Sparks
Published Jan 22, 2026
Bladder stones form when minerals and organic materials accumulate in the bladder. Usually the result of inflammation or disease, bladder stones block the urethra, making it difficult or impossible for your cat to urinate. Typically caused by urinary tract infections, they are often linked to dirty litter boxes.
Why does my cat keep getting urinary blockages?
What Causes Urinary Blockages in Cats? Urinary blockages (also called urinary obstructions) are usually caused by plugs of proteinaceous sludge, crystals and/or small stones that become lodged within a cat's urethra—the tube leading from the urinary bladder to the outside of the body.
How do you unblock a cat's bladder at home?
Slip your dominant (squeezing) hand under the cat's belly and slightly closer to the rear than right below the ribs. Place your other hand along the animal's side so you can gently hold and/or lift the cat. When the animal has settled into position, feel the abdomen, slightly higher than the leg sockets.
Can a cat still pee with a blockage?
Once cats become completely obstructed, they may attempt to urinate in the litter box but will produce no urine. The cat may cry, move restlessly, or hide because of discomfort, and eventually lose their appetite and become lethargic. Complete obstruction can cause death of the cat in 3–6 days.
How do I know if my cat's urethra is blocked?
Common symptoms include:
- Straining to urinate.
- Frequent small urinations.
- Blood in the urine.
- Painful urination.
- Inappropriate urination (somewhere other than the litter box)
- Straining without urination (urinary obstruction)
- Crying, restlessness, or hiding because of discomfort.
- Loss of appetite.
How does a vet tell if a cat has a urinary blockage?
Blood tests will determine if there are any toxins in your cat's bloodstream and figure out whether they are dehydrated or not. This also tell your vet if there is an underlying infection causing the blockage based off white blood cell count.
How much does it cost to fix a urinary blockage in a cat?
Typically speaking though, treatment for a non-surgical case of feline urethral obstruction that doesn't re-obstruct when the catheter is pulled will likely cost you between $750–1,500.
What are the symptoms of a blocked cat?
Common Signs That Could Mean Your Cat is Uncomfortable or Blocked
- Frequent Trips to the Litter Box. ...
- Producing Only a Few Drops of Urine at a Time. ...
- Straining to Urinate. ...
- Abdominal Pain. ...
- Blood in Urine. ...
- Vomiting. ...
- Lethargy. ...
- Loss of Appetite.
How common is urinary blockage in cats?
Urinary obstruction is, unfortunately, relatively common and is reported in 28-58% of all cats with lower urinary tract disease.
How do you prevent bladder crystals in cats?
"The most important step to preventing recurrence is to feed a prescription diet." Additionally, you will need to increase your cat's water intake in order to make your cat's urine less concentrated. In most cases, using the canned version of your cat's prescription diet will keep the urine dilute.
Can litter cause crystals in cats?
Commonly, they're struvite, composed of magnesium, ammonium and phosphate that binds together to form crystals in high-enough concentrations. Cats may also develop calcium oxalate crystals, usually occurring when cats excrete calcium through urination.
How do I know if my cat has crystals in his urine?
Symptoms of Crystals in the Urine in Cats
- Blood in the urine.
- Straining to urinate.
- Passing only small amounts of urine.
- Frequent licking of the genitalia.
- Urinating outside of the litter box, such as on the bed or carpet.
- Depression.
- Irritation.
- Passing no urine, which is a medical emergency.
What ingredient in cat food causes urinary problems?
An abundance of certain minerals such as calcium, phosphorus and magnesium --- often found in grocery store brand cat food --- can cause crystals to form in the urine, which sometimes leads to urinary stones.
How do you get rid of crystals in cats naturally?
Give your cat lots of water. This advice was given to me by Furball's first holistic vet. She said that increasing his water intake kept things flowing through his system to help reduce the concentration of struvite crystals in his urine. I added water to Furball's food as he wouldn't drink it normally.
What to feed cats with urinary problems?
A veterinary diet cat food is often the best choice for cats with recurrent urinary tract disease. Such foods include Hill's Prescription c/d, Royal Canin Urinary s/o and Purina UR.
How do you dissolve struvite crystals in cats naturally?
Diet has played an important role in struvite dissolution and prevention for over 35 years. Dry and canned therapeutic foods are 100% effective in dissolving feline struvite uroliths in about 1 to 3 weeks. The case of Lilly a 5-yr-old, female spayed DMH presenting with dysuria and hematuria.
How long does it take for cat crystals to go away?
Treating Cat Urine Stones
There are several ways to treat urine crystals and stones in cats. Prescription diet: Your vet will prescribe a specially formulated food that alters the chemical composition of your cat's urine and causes the stones to gradually dissolve within 1-2 months.
Why would a male cat start peeing in the house?
Frustration, stress, or anxiety can sometimes cause a cat to change their urinating habits. Any change in their routine, such as a new person in the household or moving house, can lead to changes in urination. They may also “mark” spots in the house with their urine as a means of marking their territory.
Can changing cat litter cause UTI?
Yes, dirty litter boxes can cause bladder problems — but not so much infection as the inflammatory condition known as feline lower urinary tract disease (FLUTD).
Do crystals in cat urine go away?
Crystalluria in animals with anatomically and functionally normal urinary tracts is usually harmless because the crystals are eliminated before they grow large enough to interfere with normal urinary function. Even so, they represent a risk factor for kidney stones.
What should I do if my cat has crystals in my urine?
Feeding a proven therapeutic diet for urinary tract care may help reduce crystals in cats who are prone to developing them. Also, if struvite urolith stones are present, your veterinarian may use a therapeutic diet that nutritionally manages and dissolves stones, while preventing formation of calcium oxalate uroliths.