It’s empty in here!
First things first, BUY THE ETRA RINGS! you have to be more stubborn than your cats & absolutely determined for them to succeed. You also have to remove EVERY OTHER litter tray & make sure the rings are kept immaculately clean at all times. If you cannot do this for any reason, you are wasting your time, money & upsetting your cats. I started with my Burmese girl 11 years ago. She was 6 months & is a very tiny cat. She hasn't used a tray since - Imagine the money I have saved!!!!
The idea is great, the video clear and the kit works well enough but unfortunately only one of my two old rescue cats was prepared to consider change, ie jumping up to use the Stage 1 litter tray on top of the loo seat. Sadly, the other boy refused to consider this and instead started to mess on the bathroom floor. After a couple of weeks of progress with one cat I had to abandon Litter Kwitter. I'd happily try it again with a younger cat.