How to Remove Urine Stains From Mattress: 24-Hour Fix
To remove urine stains from a mattress, blot fresh liquid, apply an enzyme-based urine cleaner deeply enough to match the spill, then dry the mattress completely with strong airflow. For a fresh stain, treatment usually takes 20-30 minutes of work and 12-24 hours of drying; dried or pet urine may require two or more applications. […]