How To Clean Urine From a Mattress: Simple Steps That Actually Work

If you’re searching for how to clean urine from a mattress, you’re likely dealing with a fresh accident, an older stain, or lingering odor. This guide walks you through exactly what to do, what to avoid, and how to protect your mattress going forward.

What Happens When Urine Gets on a Mattress?

Urine can soak deep into a mattress’s comfort layers and core. If it’s not cleaned properly, you may notice:

  • Visible yellow stains
  • Persistent odors, even after surface cleaning
  • A mattress that feels less fresh or hygienic

Because you can’t just put a mattress in the washing machine, using the right spot-cleaning method is important.

How To Clean Urine From a Mattress (Fresh Stains)

Step-by-step guide for fresh accidents

  1. Act quickly

    • Gently blot up as much liquid as possible with paper towels or a clean cloth.
    • Do not rub, as this can push urine deeper into the mattress.

  2. Apply a mild cleaning solution

    • Mix a small amount of gentle liquid detergent with cool water.
    • Lightly spray or dab the area; do not soak the mattress.

  3. Blot again

    • Use a dry cloth to absorb moisture.
    • Repeat light applications of solution and blotting if needed.

  4. Use baking soda for odor control

    • Sprinkle a generous layer of baking soda over the damp spot.
    • Leave it on for several hours, or ideally overnight, to help absorb moisture and odor.

  5. Vacuum thoroughly

    • Once the baking soda is fully dry, vacuum it up using an upholstery attachment.

  6. Let the mattress dry completely

    • Allow airflow by opening windows or using a fan.
    • Make sure the mattress is completely dry before making the bed.

How Do You Clean Dried or Old Urine Stains?

Older stains can be more stubborn, especially if they have set into the foam or fabric.

Extra steps for dried urine

  • Lightly rehydrate the stain with a small amount of water to make it easier to treat.
  • Use a gentle enzyme-based cleaner designed for fabrics or upholstery, following the label directions carefully.
  • Allow the cleaner to sit for the recommended time so it can break down odor-causing residues.
  • Blot, apply baking soda, and vacuum once dry, just as you would with a fresh stain.

Because mattresses vary in materials and construction, always spot test a small, hidden area first to make sure the cleaner does not damage the fabric or cause discoloration.

Can You Remove the Smell Completely?

Odor removal depends on:

  • How long the urine has been in the mattress
  • How deeply it has soaked in
  • What cleaning steps you use

Using baking soda, blotting thoroughly, and allowing ample drying time often reduces odors significantly. For strong, recurring smells, a second cleaning session with an appropriate cleaner may help.

What Should You Avoid When Cleaning Urine From a Mattress?

To protect the structure and comfort of your mattress, it is helpful to avoid:

  • Soaking the mattress with water or solution
  • Using harsh chemicals or bleach, which may damage fabrics or irritate skin
  • Scrubbing aggressively, which can spread the stain and wear down the cover
  • Skipping the drying step, which may leave the mattress damp and uncomfortable

How Can You Protect Your Mattress After Cleaning?

Once you’ve gone through the work of learning how to clean urine from a mattress, prevention becomes a priority. Many sleepers choose:

  • A water-resistant mattress protector to act as a barrier between the sleeper and the mattress.
  • Removable, washable covers where available, which are easier to clean than the mattress itself.
  • Regular vacuuming and airing out of the mattress to keep it feeling fresh.

These habits do not guarantee a perfectly stain-free mattress, but they can make future cleanups simpler and help the mattress stay more hygienic over time.

✔️ Quick Mattress Takeaways

Key points consumers should understand about how to clean urine from a mattress:

  • Act fast: Blot, don’t rub, to prevent urine from sinking deeper.
  • Use gentle products: Mild detergent, baking soda, and suitable fabric cleaners are commonly used.
  • Avoid oversoaking: Too much liquid can be as problematic as the original spill.
  • Let it dry fully: Airflow and time are essential before putting bedding back on.
  • Old stains may need repeat treatments: Set-in urine can require more than one cleaning session.
  • Prevention helps: A protective cover can make future accidents easier to manage.

With a calm, step-by-step approach, cleaning urine from a mattress is manageable, and many stains and odors can be significantly reduced using common household methods and careful technique.