got citi kitty about 3 weeks ago and so far so good. We have a 4 month old kitten and he's going on the toilet and actually aiming for the hole. It might not work so well with older cats but i have no experience with that. Be patient and dont make the holes bigger until your cat seems comfortable going on it and hasnt had any accidents for at least a week. Give treats everytime he uses it and you should be fine. Ill update once we remove the entire citi kitty and hes using just the toilet. We have removed 3 holes so far so we only need 2 more...