Howdy Besnier! Precisely what is the gap amongst the litter box as well as the cats? Actually the Litter Robot makes sounds but is not really that noisy possibly. My cat acquired accustomed to that sound and she seems to be familiar with the litter box is cleaning cleaned :-) https://onlybookmarkings.com/story20103459/the-smart-trick-of-petkit-review-that-nobody-is-discussing