Unicharm Pet Deo-Sheet Deodorizing Lab Toilet System Toilet Tray Wide Main Unit Set Details: Main unit set ready to use for approximately 2 weeks. Set Contents: Toilet tray main unit: 1 Antibacterial dry filter (approx. 1 week use) x 2 Highly absorbent/deodorizing mat (approx. 3 days use) x 4 Dog toilet system that eliminates odors even without changing for 3 days. Surface is dry Antibacterial dry filter Replace once a week is OK Urine passes through without remaining on the surface Highly absorbent! Highly absorbent/deodorizing mat Replace every 3 days is OK Traps 3 days' worth of urine and bad odors Opened for taking photos, but unused. Shipping label will be affixed directly to the outer box.