How To Remove Urine Smell From a Mattress: Step‑by‑Step FAQ Guide

If you’re searching for “How To Remove Urine Smell From a Mattress,” you’re likely dealing with a fresh accident or an older lingering odor. This guide walks through simple, home-friendly methods to get rid of both the stain and the smell, using everyday cleaning ingredients.

Why does urine smell stay in a mattress?

Mattresses are thick and absorbent, so urine can soak deep into the foam and fabric layers. If it isn’t cleaned quickly and thoroughly:

  • Odor-causing compounds can dry and set in
  • Moisture can get trapped inside the mattress core
  • Repeated accidents can build up layers of smell

Removing the urine smell from a mattress usually requires both cleaning the surface stain and neutralizing the odor inside the fabric and foam.

How To Remove Urine Smell From a Mattress (Fresh Accidents)

Step 1: Blot, don’t rub

As soon as you notice the accident:

  • Use clean, absorbent towels or paper towels
  • Firmly press down to soak up as much liquid as possible
  • Avoid rubbing, which can push urine deeper into the mattress

The more you remove now, the easier it is to tackle the smell.

Step 2: Apply a gentle cleaning solution

A commonly used approach is a mild solution of water and a small amount of gentle detergent:

  1. Mix cool water with a bit of liquid laundry detergent or mild dish soap.
  2. Lightly spray or dab the solution onto the stained area.
  3. Gently blot with a clean cloth to lift out more urine.

Avoid soaking the mattress. Too much liquid can create new odor and drying issues.

Step 3: Use baking soda to tackle odor

Baking soda is often used to absorb moisture and neutralize smells:

  • Sprinkle a generous layer of dry baking soda over the damp area.
  • Lightly press it in so it contacts the fabric.
  • Leave it for at least several hours, or overnight for stronger smells.
  • Vacuum the baking soda thoroughly once it’s dry.

This simple step is a core part of how to remove urine smell from a mattress using household items.

How do I remove old or dried urine smell from a mattress?

Older stains and lingering odors may need a more targeted odor‑neutralizing approach.

Step 1: Lightly rehydrate the area

Dried urine can be harder to remove. Lightly:

  • Mist the stained spot with plain water or a mild cleaning solution
  • Avoid over-wetting; aim to just dampen the area

This can help loosen dried residue before deodorizing.

Step 2: Use an odor-neutralizing treatment

Many people find success with enzyme-based cleaners designed for fabric and upholstery. These products are typically made to break down odor-causing residues. When using them:

  • Follow the label instructions carefully
  • Test on a small, hidden patch of mattress fabric first
  • Allow the recommended dwell time so the cleaner can work
  • Blot and let the mattress dry completely

Step 3: Repeat baking soda if needed

For stubborn smells, you can repeat the baking soda step:

  • Apply a thick layer
  • Leave it on longer (up to 24 hours)
  • Vacuum thoroughly

Sometimes multiple rounds are needed for older accidents.

Is it safe to use vinegar or strong chemicals on a mattress?

Many people use diluted white vinegar as a deodorizer on fabrics. However, consider:

  • Vinegar has a strong smell of its own that some people dislike
  • Over-wetting with vinegar and water can make drying harder
  • Strong chemicals or harsh cleaners may discolor fabrics or damage foam

If you use any new cleaner, start with a small, hidden test area and keep the mattress as dry as possible.

How do I dry the mattress properly after cleaning?

Drying is a key part of how to remove urine smell from a mattress because lingering moisture can cause ongoing odors.

Helpful drying tips:

  • Open windows or use fans to increase air flow
  • If possible, stand the mattress on its side to help air circulate
  • Give it several hours or more to dry before putting bedding back on
  • Make sure the inside feels fully dry to the touch, not just the surface

Avoid using very high heat directly on the mattress, which may damage some materials.

How can I prevent future urine smells in my mattress?

While accidents are hard to avoid completely, you can protect the mattress so cleanup is easier next time:

  • Use a water-resistant mattress protector or cover
  • Wash bedding and protectors quickly after accidents
  • Keep a basic cleaning kit handy (towels, mild cleaner, baking soda) for fast response

Fast action generally leads to less staining and weaker odors.

✅ Quick Mattress Takeaways

Key points on How To Remove Urine Smell From a Mattress

  • Act fast: Blot fresh urine immediately with absorbent towels.
  • Clean gently: Use a mild soap-and-water solution, and avoid soaking the mattress.
  • Deodorize: Apply baking soda to absorb moisture and neutralize odor, then vacuum.
  • For old stains: Lightly re-dampen, then use a fabric-safe, odor-neutralizing cleaner and repeat baking soda if needed.
  • Dry completely: Good airflow and enough time are essential to prevent lingering smells.
  • Protect going forward: A removable, washable mattress cover can make any future cleanup much easier.

With patience and the right steps, it’s often possible to significantly reduce or eliminate urine odor and keep your mattress fresher for longer.