Genuine Joe Deodorizing Commode Mat, Black, 6/Carton (GJO85200) Case of 6The P Shield commode mats absorb and neutralize two to four times the amount of urine compared to competitive urinal mats. They prevent floor damage and costly repairs caused by discoloration and uric acid. They include helpful date tabs for replacement reminders. Ideal for many facilities, the P Shield prevents the tracking of urine outside the restroom for a more hygienic facility.