CUSTOM FIT FOR LITTER-ROBOT: Get rid of cat waste easily and quickly with these cat litter bags custom fit for the Litter-Robot waste drawer. Compatible with all Litter-Robot models. 9-11 GALLONS OF CAPACITY: These durable cat litter liners are equipped to hold a large amount of waste or rubbish and offer contactless cleanup. Includes 50 liner bags. EASY TO INSTALL: For the Litter-Robot 4, simply wrap the edges of the liner over the rim of the waste drawer. For the Litter-Robot 3, push the rolled edges of the liner into each of the four tabs in the waste drawer. NO MORE SCOOPING: Get notifications through the Whisker app when the waste drawer is full. Just remove the waste drawer liner, discard, and replace with a new Litter-Robot bag. DESIGNED & ASSEMBLED IN THE USA FOR 20+ YEARS: Whisker is the leading innovator in pet technology and refined pet accessories. Our US-based assembly team ensures greater attention to detail.