Removing Stains From Your Mattress and Other Furniture
First, check your manufacturer's warranty to see what it's 'stain policy' is. In some cases, it does in fact cover stain removal if the warranty has not expired yet. In either case, the stain will need to be attended to immediately. There are many different suggestions for removing stains from a mattress of any piece of upholstery, so results may vary.
Do NOT use ammonia-based products.
Absorb liquid using paper towels or dry cloth.
Apply pressure to the towel or cloth for about 15 minutes.
Take another towel/cloth and repeat, continuing to absorb, so that nothing can go any deeper into the mattress.
If you have an enzyme cleaner for urine, now is the time to get it out and use it.
If not, then:
Saturate the entire area with white vinegar.
Blot the area until nothing more can be absorbed.
Cover the area with baking soda (to deodorize it) and leave it until the next morning.
Vacuum the baking soda up.
Other recommended solutions include, but not at the same time, include using vinegar, hydrogen peroxide (or both vinegar and hydrogen peroxide), Folex (some swear by this! Purchased as stores such as Wal-Mart), enzyme cleaner, upholstery cleaners, or professional cleaning service.