After the burden sensor at the bottom from the device detects the cat leaving the box, the World rotates sifting the clumps from clean up litter to dump them into the bottom waste drawer. The Petree and Litter-Robotic are identical. However, the primary distinguishing attribute could be the Litter-Robotic application, https://socialbookmarkgs.com/story20231409/the-2-minute-rule-for-robotic-pet-cleaning