How To Get Dog Urine Smell Out Of a Mattress: Step-by-Step FAQ

If you’re searching for “How To Get Dog Urine Smell Out Of a Mattress,” you’re likely dealing with a fresh accident or a lingering odor that just won’t go away. This guide walks you through what to do right now, what actually removes the smell, and when it may be time to reassess the mattress.

Why Does Dog Urine Smell Linger in a Mattress?

Dog urine contains urea, ammonia, and other organic compounds that can soak deep into mattress layers. If not cleaned quickly and thoroughly, the moisture and odor can:

  • Penetrate beyond the surface fabric
  • Dry in place and become harder to remove
  • Reactivate when exposed to humidity or body heat

That’s why simply spraying air freshener or using a light surface cleaner usually isn’t enough.

How To Get Dog Urine Smell Out Of a Mattress (Fresh Stains)

What should I do first when I notice the accident?

  1. Act fast. The sooner you start, the easier it is to remove both the stain and smell.

  2. Blot, don’t rub.

    • Use clean, dry towels or paper towels.
    • Press firmly to absorb as much urine as possible.
    • Avoid scrubbing, which can push urine deeper into the mattress.

  3. Apply a gentle cleaning solution.
    A common approach is a mild, water-based cleaner such as diluted dish soap or a simple water-and-vinegar mix. Lightly mist or dab—do not soak the mattress.

How do I actually remove the odor, not just mask it?

After blotting and surface cleaning:

  1. Use baking soda over the area.

    • Sprinkle a generous layer directly on the damp spot.
    • Baking soda helps absorb both moisture and odor.

  2. Let it sit for several hours or overnight.

    • The longer it sits (within reason), the more odor it can help reduce.

  3. Vacuum thoroughly.

    • Use an upholstery or brush attachment.
    • Go slowly to pull up as much baking soda as possible.

If the smell is reduced but still noticeable, you can repeat the process once or twice.

What About Old, Dried Dog Urine Smells?

Can I still get old dog urine odor out of a mattress?

It’s often more difficult but not always impossible. Old stains may have:

  • Set into deeper layers
  • Left a faint yellowish mark on lighter fabrics
  • Become more noticeable in warm or humid conditions

To treat older spots:

  1. Lightly rehydrate the area with a water-based cleaner (do not soak).
  2. Blot again to draw up dissolved residue.
  3. Apply baking soda and let it sit for a long period (overnight or longer).
  4. Vacuum thoroughly.

You may need multiple rounds to noticeably improve old odors.

Is It Safe to Use Strong Cleaners on My Mattress?

Should I use bleach or harsh chemicals?

For most mattresses, strong, undiluted chemicals are not recommended. They can:

  • Break down fabrics and foams
  • Leave their own unpleasant odors
  • Cause discoloration or damage to the cover

Instead, focus on:

  • Mild, water-based cleaners
  • Baking soda for odor absorption
  • Sparing, careful use of any specialized cleaners intended for fabrics or upholstery

Always spot-test a small hidden area first.

How Do I Dry the Mattress After Cleaning?

A mattress that stays damp can hold onto odors or develop other issues.

  • Increase airflow: Open windows, run a fan, or use a low-heat setting on a hair dryer held at a distance.
  • Avoid direct high heat: Excess heat can damage foam layers.
  • Allow enough time: Make sure the mattress is fully dry before putting sheets back on.

If possible, prop the mattress up so both sides get airflow.

Can the Smell Ever Be Permanent?

When is a mattress too far gone?

Sometimes, especially with repeated accidents or deep, long-standing stains, dog urine odor may never fully disappear. Signs it may be too set in:

  • Strong odor remains even after multiple cleanings
  • Discoloration covers a large area
  • The smell is noticeable from a distance and not just close up

In these cases, it may be reasonable to limit further cleaning and consider whether continuing to use the mattress is acceptable for you.

How Can I Prevent Future Dog Urine Smells in a Mattress?

  • Use a washable, waterproof mattress protector. This keeps any future accidents from reaching the mattress layers.
  • Add an extra washable cover or pad over the protector for easier cleanup.
  • Attend to accidents immediately anytime they happen—fast action usually leads to better odor removal.
  • Allow regular airing out of your mattress by removing bedding during the day occasionally.

✅ Quick Mattress Takeaways

Key points consumers should understand about How To Get Dog Urine Smell Out Of a Mattress:

  • Act quickly: Blot fresh urine immediately to prevent deep penetration.
  • Blot, don’t rub: Rubbing can spread and push urine deeper into the mattress.
  • Use mild cleaners: Gentle, water-based solutions are usually safer for mattress materials.
  • Rely on baking soda for odor: It helps absorb both moisture and smell when left on for several hours.
  • Repeat if needed: Old or heavy stains may take multiple treatments.
  • Dry thoroughly: Good airflow is essential to avoid lingering odors.
  • Know the limits: Very old, extensive urine damage may never fully lose its smell.
  • Protect the mattress: Waterproof protectors and quick cleanup are the best long-term defenses.

With patience, the right steps, and realistic expectations, many people find they can significantly reduce or remove dog urine smells from a mattress and keep their sleep surface fresher over time.