My litter robot smells really bad of urine. I used to be proud to have people in my house but no more as it smells like cats. I just took it compltely apart and scrubbed it for hours in all places and it still smells like pee. Everytime my heat turns on it blasts cat pee through the house. I don't know what else to do. I do not want a house that smells like cat. I am going to try vinegar tomorrow. I have two of these and its a problem with both. The cats are not going outside the box it is the box itself.