Toilet training set with antibacterial dry filter, no need to change for 3 days. This deodorizing toilet system eliminates pet odors effectively, with no need to change for 3 days. - Brand: Unicharm - Product Name: Deo Sheet - Type: Deodorizing Lab Toilet System - Replacement Cycle: 3 days - Size: Regular - Contents: Dedicated toilet body: 1 + Dedicated mesh card: 1 + Filter: 2 + Mat: 4 - Features: Odor Lab Toilet System No need to change for 3 days - Filter Type: Antibacterial dry filter Received as a gift. Will ship unopened with the shipping label directly on the outer box. Thank you for looking.