Super thick durable litter box liners——heavy duty litter liners is made by rugged material, scratch-resistant, tear-resistant and waterproof.60 Jumbo litter box liners——Each bog comes with 60 kitty litter bags. compatible with Litter-Robot 3WECATION litter liner was designed for the cat lovers, it makes litter box clean up a breeze. Empty the cat litter box without the mess and dust, easy and hygienic.For easy installation, just roll down the edges and, starting with the back of a wastepaper drawer, push the rolled edges of the bag into each of the four labels to keep the bag taut as you walk.Customer service, if you are not satisfied with kone cat sandbags, please feel free to contact us, we will refund the full amount. And hope that customers put forward suggestions for improvement. Product Description Easy to install Just wrap the edges of the liner over the rim of your Litter-Robot 4 waste drawer, or push the rolled edges of the liner into each of the four tabs in your Litter-Robot 3 waste drawer. 60 count 120 count 4 pack