THIS HAS BEEN THE BEST MONEY I HAVE SPENT ON OUR CATS. I actually purchased the Calico package which has the higher sides on it for our cats to paw on like they like to do while using the bathroom. I do however wish I would have purchased the Tuxedo package that has the hood on it since our cats are use to having a hood on there box. While I was setting up our cats new bathroom they were very curious as to what I was doing. They were sniffing and inspecting there new bathroom. Our large 10yr old male cat Sunny jumped into it and used it as soon as it was set up for them. He is so happy. I did keep there old box set up for them for 5 days without cleaning it at all because we have one 5yr old girl Rapunzel that don't handle changes very well. It took her a couple of days to decide she would use this new bathroom. But now that she has she is a very happy girl also. There has been no more bathroom problems with our cats since getting this product. I would recommend this product to anyone that is wondering what is the best product for there pet.