How to Get Urine Smell Out of a Mattress Safely

How to get urine smell out of a mattress: identify the material first

Start with the mattress care label, not a cleaning recipe. This routine is for a fabric-covered innerspring or foam mattress whose manufacturer permits limited spot cleaning. It does not cover leather, suede, wool-filled or other specialty mattresses, an electrical or heated mattress, or a mattress whose care instructions prohibit liquid cleaners. A removable cover may have separate washing instructions; do not assume that a washable cover means the mattress core can be washed.

Also check how far the urine traveled. A small, recent spot on the cover is different from a large spill that soaked into the padding or foam. Surface cleaning may reduce odor without reaching urine deep inside the mattress. If the mattress is heavily saturated, repeatedly wetting it is unlikely to be a sound home remedy. Moisture trapped in porous materials can create a separate problem. The EPA advises drying wet items promptly to help prevent mold growth.

Prepare the area and supplies

Remove sheets and any mattress protector. Launder those items according to their own care labels, separately from the mattress-cleaning task. Open a window if practical and arrange airflow across the room. Keep the mattress uncovered so you can see the entire affected area and monitor its drying.

Gather clean white towels or paper towels, a small amount of cool water, and, if the mattress label allows it, a urine-specific enzyme cleaner whose label permits use on the mattress fabric. You may also need a fan. Read the cleaner’s directions before opening it: note any dilution, test-spot, application, dwell-time, removal, and drying instructions. A product marketed for pet urine is not automatically suitable for every mattress.

Do not add bleach, ammonia, vinegar, fragrance, or a second cleaner to the treatment. In particular, CDC warns against mixing bleach with other cleaners or disinfectants. If you have already applied another product, do not layer an enzyme cleaner over it; follow the mattress and product instructions for removing residue and let the area dry before deciding what to do next.

Step-by-step routine

1. Blot fresh urine immediately. Press a dry towel onto the wet area and lift it away. Repeat with clean sections of towel until little moisture transfers. Work from the outside toward the center to limit spreading. Do not scrub or press hard enough to drive liquid farther into the padding. For an old, dry odor, skip this step rather than adding water just to rewet the spot.

2. Check the care instructions and test the cleaner. If spot cleaning is permitted, test the enzyme cleaner on a small, inconspicuous part of the same fabric, following its label. Let the test area dry before checking for color change, a ring, or other damage. Stop if the test fails. If the mattress manufacturer specifies a particular cleaning method, use that method instead of this general routine.

3. Treat only the affected area. Apply the labeled amount of enzyme cleaner to the urine spot. Follow the product’s stated dwell time and instructions for blotting or removing it. Avoid pouring cleaner into the mattress. The goal is to contact the affected surface without soaking the layers below it. More liquid is not necessarily more effective and makes drying harder.

4. Blot any remaining surface moisture. Use a fresh towel and gentle pressure. If the product label or mattress instructions call for a light water blot to remove residue, use the smallest amount they specify, then blot again. Otherwise, do not add a rinse step. Keep other cleaning chemicals off the treated area.

5. Dry the mattress completely. Leave it uncovered and use a fan to move air across the spot. Drying time varies with the amount of liquid, airflow, humidity, and mattress construction; do not rely on a fixed number of hours. Check by touch and smell after the surface appears dry, and wait longer if it feels cool or damp. Do not put sheets or a protector back on while moisture remains.

6. Reassess the odor once dry. Smell the treated area and the surrounding fabric. If the product label allows another application and the mattress remained only lightly damp during the first treatment, one further treatment may be reasonable. Let it dry fully again before judging the result. Repeatedly soaking a persistent spot is not a substitute for reaching contamination within the mattress core.

When to stop

Stop applying liquid if the care label rules it out, the test spot changes the fabric, or the mattress remains damp despite good airflow. A strong odor after a fully dried treatment can indicate that urine reached layers a surface cleaner cannot address. A large or recurrent accident may call for advice from the mattress manufacturer or a professional experienced with that construction; replacement may be the practical choice if the core is contaminated.

Do not try to cover a musty smell with fragrance. If you see visible mold or suspect moisture has remained trapped inside, consult the EPA’s mold cleanup guidance. Porous materials can be difficult or impossible to clean thoroughly once mold grows within them. Someone with asthma, allergies, or another relevant health concern should avoid handling suspected mold and seek appropriate advice.

FAQ

Can I use baking soda instead of an enzyme cleaner?

Baking soda may be used in some household odor routines, but it does not establish that urine inside a mattress has been removed. It can also be difficult to remove from damp fabric. Check the mattress instructions before applying powders, and do not use a powder to judge whether a still-damp mattress is ready for bedding.

Should I use bleach to disinfect the mattress?

Do not use bleach unless the mattress manufacturer expressly permits it and the product label supports that use. Bleach can damage materials, and adding it to another cleaner creates a chemical hazard. Follow label directions rather than treating odor as proof that a disinfectant is needed.

What if the smell returns after the mattress dries?

First confirm the mattress is fully dry and that the odor is coming from the mattress rather than bedding, the protector, or the bed frame. If the mattress still smells after a label-compliant treatment, contamination may be deeper than this surface routine can reach. Avoid repeated saturation; seek manufacturer or professional guidance and consider replacement.

Source note

The EPA sources inform the moisture and mold-related stop points; CDC guidance supports the warning against mixing bleach with other cleaners. These sources do not establish that a particular enzyme product will remove odor from every mattress. The mattress manufacturer’s care instructions and the cleaner’s label govern whether and how a product can be used on a specific bed.