Pour on hydrogen peroxide on the stain, and immediately scrub with towel. Let dry and reapply if needed. My mattress took two treatments.
By Lee S. from LA
Use Dawn and Baking Soda to Clean a Smooth Top Range
Caring for Your Mattress
Repairing A Plastic Mattress Cover
Cleaning Urine Stains from a Mattresses
Removing Rust from Baking Pans
Remembering to Flip or Rotate Your Mattress