I have 2 cats and the toilet training was going well...until the amber stage. Other cat urinates in the toilet, through the hole, but you can find poo from the floor or from the sink! Other cat refuses to urinate through the hole, but IF I put the red disc on (at night) he might poo on it...but not necessarily. He will NOT urinate, even to the red disc, not anymore. He is peeing on the floor, always the same place. I've cleaned it several times and I'm getting a little tired. Should I give up? What on earth should I do?