I have one cat who, it turns out, is afraid of the dark. I had to set up nightlights on the catboxes because the little imp would pee on the carpet all over the house because the catbox area was too dark.theacoustician said:4. They scram as soon as they hear anything with a motor start up (coffee grinder, vacuum, etc). I can't even image the fun I'd have if they were too afraid to use the litter box because it had a motor in it
edit: you have 4 cats? I don't feel so strange now... cuz you have doggies too, right?