Good day Besnier! What is the distance in between the litter box as well as the cats? In fact the Litter Robot tends to make noise but is not really that noisy possibly. My cat obtained accustomed to that sound and she seems to be aware of the litter box https://petskyonline-onlinestrore.blogspot.com/2025/07/petkit-purobot-ultra-premier-auto.html