My Litter Kwitter...Another Update

Project "Give Them No Other Option For about 7 Hours Each Night" is going as well as expected. When I get home from work, I take the downstairs litter box away and hide it. Then, I take each girl upstairs and gently remind her of her option by putting her on top of the Litter Kwitter. I give her some loving words, some affectionate pets and leave her alone. It is getting used more frequently now. I then remind each of them again, around 11 pm of their only potty option. Then, no later than midnight (unless I go to bed earlier) I put the downstairs litter box back and they are free to use it till their little hearts are content until I get home from work again. So, not only is it getting used, but it is getting used throughout the day. Not just in the "Missing Box" hours. I can't say for sure who is using it. I can say that my oldest uses it. I think that the youngest has started using it. But, I don't know if my middle child is. She is a very lazy cat. Very sweet but, not the most motivated of felines. All I can do is keep reminding her where it is and hoping for the best!