I was having a problem with Shadow urinating on the carpet in the front entryway for a while....I had moved the 2 kitty litter boxes into one bathroom and I don't think she was too happy about that. We finally had to give in and move one kitty litter box into the original bathroom and she quit having her accidents as frequently. Now she only seems to have ONE accident the first day we put new kitty litter filler in the box...which makes no sense to me because you'd think she would be happy it was brand new. AND now she doesn't use the kitty litter in the original bathroom, she uses the kitty litter in the other bathroom...I don't think I'll ever quite understand the thought process of a kitty!