Hello there Besnier! What is the space between the litter box and the cats? In reality the Litter Robot tends to make sound but is not really that noisy either. My cat bought accustomed to that noise and she or he would seem to understand the litter box is cleaning https://petskyonline-onlinestrore.blogspot.com/2025/07/petkit-purobot-ultra-premier-auto.html