I did't follow the acclimation instructions. Keep my cats away when the thing is running is impossible they are too fascinated by the robot that cleans the box to do that. And the package it came in, and the parts being put together and so on.
I have a 2 year old female and a 12 week old male. We took the other box away immediately and they figured it out. The cats are fine and the machine works. As long as it stays working we are good at 5 paws