Carpet & Upholstery
How to Remove a Dried Urine Stain from a Cotton Mattress Without Harming the Fabric
A dried urine stain on a cotton mattress can be stubborn and smelly, but you can lift it with an enzyme cleaner, baking soda, and white vinegar. Here's a practical guide for dried stains, with fresh-stain tips and mattress-specific warnings.
Discovering a dried urine stain on your cotton mattress is never pleasant. Whether from a pet accident or a child's bedwetting, the stain and odor can seem impossible to remove. But with the right approach and a little patience, you can lift the stain and neutralize the smell without damaging the mattress fabric.
This guide focuses on dried urine stains on a cotton mattress. We'll walk you through safe, effective methods using common household products, explain what to avoid, and give you clear steps to follow. If the stain is fresh, we'll cover that too.
Readers may also find How to Remove a Fresh Coffee Stain from a Cotton Couch Without Damaging the Fabric, How to Remove a Set-In Tomato Sauce Stain from a Cotton Couch, and How to Remove a Fresh Red Wine Stain from a Polyester Couch useful. For more stories like this, browse our Pet Stains & Odors section.
What to Do First
Before you start scrubbing, take a moment to prepare. The key to removing a dried urine stain is to re-wet it so the cleaning solution can penetrate the fibers. Here's what to do:
- Gather supplies: You'll need an enzyme cleaner (look for one labeled for pet urine), white vinegar, baking soda, dish soap (like Dawn), a spray bottle, clean white cloths or paper towels, and a vacuum with an upholstery attachment.
- Test in an inconspicuous spot: Before applying any solution to the stain, test it on a hidden area of the mattress to ensure it doesn't cause discoloration or damage.
- Remove any bedding: Strip the mattress completely and wash the sheets according to their care instructions.