What should I do if pet urine soaked through the bedding onto the mattress?

Immediately blot the mattress surface with dry towels to draw up liquid. Spray an enzymatic cleaner directly onto the damp spot so it penetrates as deep as the urine, and allow it to dry naturally under a running fan without applying direct heat.

How do I remove old pet urine odor that survived previous wash cycles?

Soak the bedding in a tub of cold water mixed with 1 to 2 cups of distilled white vinegar and a scoop of baking soda for 2 hours, drain, apply an enzymatic cleaner to the affected areas, and rewash on a cold water cycle.

Guide

How to Remove Pet Urine from Bedding

Rinse fresh urine with cold water, pretreat the soiled fabric with an enzymatic cleaner for 15 to 30 minutes, wash in cold water with heavy-duty detergent and 1 cup of distilled white vinegar, and air-dry to confirm the odor is entirely eliminated.

Bedding Pet urine

Context

Conditions that change the method

temperature sensitive — Never put urine-soiled bedding in a heated dryer until the smell is completely eradicated, as heat bonds uric acid crystals to fabric fibers.

Hygiene and heat precautions

Pet urine contains ammonia and bacteria that can trigger respiratory discomfort or skin irritation. Wear gloves when handling heavily soiled items. Do not mix chlorine bleach with vinegar or urine, as this produces toxic chloramine gas.

What you need

Enzymatic cleaner formulated for pet stains
Distilled white vinegar
Liquid laundry detergent
Baking soda (optional, for persistent odors)
Cold tap water
Washing machine

Strip the soiled bedding immediately and blot fresh urine using paper towels or rinse the affected area under cold running tap water to dilute liquid waste.
Saturate the urine mark with an enzymatic pet stain cleaner, working the solution into the fabric fibers, and let it sit for 20 to 30 minutes to digest uric acid crystals.
Place the bedding into the washing machine without overcrowding the drum.
Add your regular amount of liquid laundry detergent along with 1 cup of distilled white vinegar directly into the wash drum or fabric softener dispenser to neutralize alkaline salts.
Run a full wash cycle using cold or lukewarm water to prevent protein denaturation.
Hang the bedding to air dry in a well-ventilated area or in sunlight, and inspect the fabric for residual scent before any high-heat drying.

What to avoid

Never use a heated tumble dryer on bedding that still carries urine odor, as high heat permanently bakes the scent.
Do not use ammonia-based cleaning products, as animals perceive ammonia as territory marking and will re-soil the area.
Avoid chlorine bleach, which can react with urine ammonia and degrade delicate linen or duvet fibers.

Products

What to use

Related guides

FAQ

Questions people ask

What should I do if pet urine soaked through the bedding onto the mattress?: Immediately blot the mattress surface with dry towels to draw up liquid. Spray an enzymatic cleaner directly onto the damp spot so it penetrates as deep as the urine, and allow it to dry naturally under a running fan without applying direct heat.
How do I remove old pet urine odor that survived previous wash cycles?: Soak the bedding in a tub of cold water mixed with 1 to 2 cups of distilled white vinegar and a scoop of baking soda for 2 hours, drain, apply an enzymatic cleaner to the affected areas, and rewash on a cold water cycle.

Sources

How to Remove Pet Stains and Odors from Carpet — The Humane Society of the United States
Removing Stains from Washable Fabrics — University of Georgia Extension