How to Get Urine Out of Dishwasher: Proven 2026 Guide

Immediate Action (First 5 Minutes)

I'll be honest, finding out your cat used the open dishwasher as a litter box is a stomach-dropping moment. I've dealt with this exact nightmare after my tabby, Barnaby, decided the bottom rack was his new favorite spot. Don't panic. Don't slam the door shut and start a wash cycle. Running a hot wash right away will literally bake the uric acid into the plastic interior. That makes the smell ten times worse, and you'll deeply regret skipping the manual cleanup.

Grab some paper towels immediately. Blot up as much of the liquid as you physically can. Press hard into the corners and the filter area. You want to extract the moisture, not just spread it around. Throw those towels directly into an outside trash bin. Next, grab a damp microfiber cloth and wipe down the immediate splash zone. Keep the dishwasher door wide open to let the area air out. This 5-minute triage stops the urine from seeping deeper into the rubber gaskets. If you have a toddler who is potty training and wanders into the kitchen, this scenario is surprisingly common. The key is speed. Urine starts to crystallize and bond to the polypropylene plastic tub within minutes.

What You'll Need (Tools & Products)

You can't just use regular dish soap for this. Standard dish detergents like Cascade Platinum are engineered to break down food starches and proteins. They are completely useless against uric acid. If you just run a normal pod cycle, you'll open the door to a wave of hot, concentrated ammonia. I've tested dozens of cleaners over my 12 years in professional cleaning, and enzyme-based products are the only things that actually work. Here is my exact toolkit for this gross job.

Item	Purpose	Estimated Cost	My Top Pick
Enzyme Cleaner	Breaks down uric acid crystals	$15-22	Nature's Miracle Hard Floor & Surface
White Vinegar	Neutralizes alkaline odors	$4-6	Heinz Cleaning Vinegar
Baking Soda	Absorbs lingering smells	$2-4	Arm & Hammer Pure Baking Soda
Old Toothbrush	Scrubs tight gasket crevices	$3	Oral-B Indicator Contour Clean
Microfiber Cloths	Wipes without leaving lint	$10-15	Amazon Basics 24-Pack

Step-by-Step Removal Process

Step 1: Remove the Racks and Inspect

Pull out both the top and bottom dish racks. Set them on a tarp or old towels in the yard. You need clear access to the entire dishwasher tub. If you have kids who track mud everywhere, you might also find debris mixed with the urine. Take a flashlight and look closely at the spray arms. Cats sometimes spray upward. Check the tiny holes on the rotating arms for any blockages or residue.

Step 2: Extract and Clean the Filter

This is where the worst smells hide. Twist the cylindrical filter at the bottom center of your machine and pull it out. Most modern models, like the Bosch 800 Series or KitchenAid KDTM404KPS, have a two-part filter system. Separate the flat mesh screen from the main cylinder. Wash both pieces in your sink using hot water and a stiff brush. I use an old Oral-B toothbrush to scrub the mesh. Rinse it until the water runs completely clear. If your machine has a hard food disposer instead of a manual filter, use a wet/dry shop vac to suck out any debris from the bottom basin before applying liquids.

Step 3: Saturate with Enzyme Cleaner

Grab your Nature's Miracle or Rocco & Roxie Stain & Odor Eliminator. Spray the entire interior generously. Don't be shy with the product. You want the plastic walls, the bottom basin, and the rubber door gasket completely soaked. Enzyme cleaners need time to eat the uric acid crystals. Let it sit for exactly 15 to 20 minutes. Keep the door open during this time so the enzymes can breathe and work effectively.

Step 4: Wipe Down the Gaskets and Crevices

Take a damp microfiber cloth and wipe the rubber seals around the door. Urine loves to pool in the bottom lip of the door seal. I'll be honest, this takes elbow grease. Use your toothbrush to dig into the tight folds of the rubber gasket. If the cloth comes away yellow or smelly, rinse it and repeat. You must remove all physical residue before moving to the wash cycles.

Step 5: Run a Hot Vinegar Steam Cycle

Place a dishwasher-safe bowl filled with 2 cups of white cleaning vinegar on the top rack. Make sure the bowl is upright and won't tip over when the spray arms start spinning. I prefer using a heavy ceramic ramekin for this exact reason. Do not put any dishes inside. Close the door and select the heaviest, hottest wash cycle available. The water temperature should reach at least 140°F. The vinegar will dispense throughout the cycle, neutralizing alkaline odors and cutting through any lingering grease or biofilm. This step is non-negotiable.

Step 6: The Baking Soda Deodorizing Rinse

Once the vinegar cycle finishes, open the door to let the steam escape. Sprinkle 1 cup of Arm & Hammer baking soda directly across the bottom of the dishwasher tub. Run a short, 30-minute quick wash cycle. The baking soda acts as a mild abrasive and a powerful odor absorber. When this cycle ends, leave the door cracked open for at least 4 hours to air dry completely.

Alternative Methods

Hydrogen Peroxide and Dish Soap

If you don't have an enzyme cleaner on hand, mix 16 ounces of 3% hydrogen peroxide with three drops of Dawn Ultra dish soap in a spray bottle. Spray the interior and let it sit for 10 minutes. Hydrogen peroxide oxidizes the odor-causing bacteria. Just be careful, as peroxide can bleach colored plastics if left too long. Wipe it down thoroughly before running a rinse cycle.

Citric Acid Powder

Citric acid is fantastic for hard water, but it also breaks down organic compounds. Buy a tub of food-grade citric acid powder online for about $10-14. Pour 3 tablespoons into the detergent dispenser. Run a normal wash cycle on the hottest setting. This isn't the cheapest option, but it leaves the machine smelling incredibly fresh and strips away mineral buildup simultaneously.

Commercial Dishwasher Cleaners

Products like Affresh Dishwasher Cleaner or Finish Dual Action are formulated to remove limescale and grease. While they aren't specifically designed for pet urine, they do a decent job of sanitizing the interior. Drop a tablet in the bottom of the empty machine and run a heavy cycle. Follow it up with a manual wipe-down of the door seals, as tablets don't always reach the rubber gaskets.

Prevention Tips

Keep the Door Latched

The easiest fix is the most obvious. Train yourself to close the dishwasher door completely after loading or unloading. If you like to leave it cracked to let dishes air dry after hosting a dinner party, use a door prop that keeps it open just an inch. Cats and toddlers can't squeeze in through a tiny gap. When your landlord inspects next week, you need the kitchen spotless and odor-free. A lingering pet smell can cost you your security deposit.

Use Pet Deterrent Sprays

Spray a pet-safe deterrent like NaturVet OFF! Training Spray ($8-12) on the floor directly in front of the dishwasher. Don't spray it inside the machine. The bitter scent discourages pets from lingering near the appliance. Reapply every few days until the habit is broken.

Install a Motion-Activated Deterrent

For stubborn cats, I highly recommend the PetSafe SSSCAT Spray Pet Deterrent ($35-45). Place it on the counter or floor near the dishwasher. When the cat approaches the open door, it releases a harmless, unscented burst of compressed air. It startles them without causing harm. My cat learned to avoid the kitchen island entirely after three encounters.

Frequently Asked Questions

Will the urine smell transfer to my clean dishes?

If you properly clean the interior and run the vinegar and baking soda cycles, your dishes will be completely safe. The high heat of the dishwasher combined with the deodorizing agents destroys the odor molecules. However, if you skip the manual wipe-down of the rubber seals, a faint smell might linger during the next wash.

Is pet urine inside a dishwasher a health hazard?

Pet urine contains bacteria and ammonia, which can cause respiratory irritation and surface contamination. Running a sanitizing cycle with water heated to 150°F will kill the vast majority of these pathogens. Always wear rubber gloves during the initial cleanup to protect your skin from direct contact with the waste.

How do I know if the urine seeped under the dishwasher?

If the smell persists after a thorough interior cleaning, the liquid likely pooled under the appliance's base pan. You'll need to remove the bottom kickplate panel and inspect the floor with a UV blacklight. If you find glowing spots on the subfloor, you'll need to treat the floor with an enzyme cleaner and potentially replace the damaged underlayment.

Can I use bleach to clean urine out of the dishwasher?

You should never mix bleach with ammonia, and urine naturally contains high levels of ammonia. Combining the two creates toxic chloramine gas, which is extremely dangerous to inhale in an enclosed kitchen space. Stick to enzyme cleaners, vinegar, and baking soda to safely neutralize the mess without risking your health.