How To Get a Pee Smell Out Of Mattress: Simple, Effective Steps That Work

If you’re searching for How To Get a Pee Smell Out Of Mattress, you’re likely dealing with a fresh accident or a lingering odor that just won’t go away. The good news is that, in most cases, you can neutralize the smell and clean the mattress at home with basic household supplies.

This FAQ-style guide walks through what works, what to avoid, and how to keep odors from coming back.

Why Does Urine Smell Linger in a Mattress?

Mattresses are thick, absorbent, and full of tiny air pockets. When urine soaks in, it can:

  • Penetrate deep into the foam or padding
  • Leave behind uric acid crystals and other residues that cause odor
  • Dry on the surface while still staying damp inside

That’s why a mattress may look clean but still smell. Surface cleaning alone usually isn’t enough—you need to draw moisture and residue out of the deeper layers and neutralize the odor.

How To Get a Pee Smell Out Of Mattress: Step-by-Step

1. Act Quickly on Fresh Accidents

The sooner you start, the easier it usually is to remove the smell.

  1. Blot, don’t rub
    Use clean, dry towels or paper towels to press down firmly on the wet area.

    • Avoid scrubbing, which can push urine deeper into the mattress.

  2. Remove bedding and wash separately
    Wash sheets, mattress protectors, and blankets in the warmest water recommended on the care label.

2. Use a Simple Cleaning Solution

A common home method is a mild, water-based cleaning solution:

  • Mix cool water with a small amount of gentle liquid detergent or mild dish soap.
  • Lightly spray or dab the solution onto the stained area. Do not soak the mattress; you want it damp, not wet.
  • Gently blot with a clean cloth to lift out more urine.

Avoid harsh cleaners or large amounts of liquid, which can damage some mattress materials or trap moisture inside.

3. Neutralize Odor With Baking Soda

Baking soda is often used because it helps absorb moisture and odors.

  1. After cleaning, sprinkle a generous layer of dry baking soda over the area.
  2. Lightly work it in with your fingers or a soft brush.
  3. Leave it on for several hours, or ideally overnight, to let it absorb as much as possible.
  4. Vacuum thoroughly to remove all baking soda from the surface and crevices.

For stubborn smells, this step can be repeated.

What If the Pee Smell Is Old or Already Dried?

Dried urine can be more difficult to remove, but many people still have success at home.

  • Start by lightly misting the affected area with cool water to rehydrate the stain (do not soak).
  • Follow the same cleaning + baking soda process as above.
  • You may need multiple rounds before the odor significantly fades.

If the smell remains noticeable after several attempts, the urine might be deeply embedded in thick foam or multiple layers. In those cases, some sleepers consider professional mattress cleaning or evaluate whether the mattress is still comfortable and usable.

Is It Safe to Use Vinegar, Hydrogen Peroxide, or Other DIY Solutions?

Many home remedies mention these ingredients. Before using anything stronger:

  • Check your mattress care instructions, if available.
  • Be aware that:
    • Vinegar has a strong smell of its own and may not be suitable for all materials.
    • Hydrogen peroxide can bleach or discolor fabrics and may affect certain foams.
    • Strong chemical cleaners can be harsh on fabrics and skin and may leave their own lingering odors.

When in doubt, test any cleaner on a small, hidden area first to see how your mattress responds.

How Can I Tell If the Smell Is Really Gone?

After you’ve tried these steps:

  • Let the mattress dry completely in a well-ventilated room.
  • Once dry, smell the cleaned area up close.
  • If you only notice a faint scent that continues to fade over a day or two, the treatment is often working.
  • If the odor is still strong or spreading, more cleaning or deeper treatment may be necessary.

Allowing enough drying time is crucial. A mattress that is still slightly damp can continue to smell.

How Do I Prevent Future Pee Smells in a Mattress?

A few simple habits can make accidents much easier to manage:

  • Use a removable, washable mattress protector to create a barrier between spills and the mattress surface.
  • Wash bedding promptly after accidents rather than letting it sit.
  • Keep basic supplies (cloths, mild cleaner, baking soda) handy so you can treat fresh spots right away.

These steps do not make a mattress stain-proof, but they can limit how far liquids soak in, which helps with odor control and cleaning.

✔️ Quick Mattress Takeaways

Key points about How To Get a Pee Smell Out Of Mattress:

  • Blot immediately: Press with dry towels to remove as much moisture as possible.
  • Clean gently: Use a mild water-and-detergent solution; avoid oversoaking the mattress.
  • Deodorize with baking soda: Cover the damp area, let it sit for hours or overnight, then vacuum.
  • Repeat for old stains: Dried urine may need multiple rounds of cleaning and deodorizing.
  • Be cautious with strong chemicals: Test in a small area first to avoid damage or discoloration.
  • Let it dry fully: Proper air-drying helps odors dissipate and prevents trapped moisture.
  • Protect for the future: A mattress protector and quick clean-up can reduce lasting smells and stains.

With patience and the right approach, many people find they can significantly reduce or remove urine odor from a mattress and keep their sleep surface fresher and more comfortable.