First, I tried several times on my own over a period of months. I made progress but there always seemed to be a setback or "mistake" My cat is very stubborn. Having an extra bathroom is best. I purchased CitiKitty and Now, she uses the toilet to urinate but not for excrement. What a thrill to hear her using the toilet. Apparently a whole new set of muscles are needed. I wonder if I should start over again. Have any of you experienced this problem?