I've had this litter box a month so far, and have been happy with it so far.I have two 5-year old cats. We have three litter boxes in the house, this being the only autoclean box. They have slowly been using the new box over time, and are starting to prefer it more and more. I'm hoping to phase out the other boxes in soon.My cats prefer an open box, so this design works well for us. I like that we can keep using our same litter. Cleaning out the tray is simple and I've not had any issues with smell. If we do, I can easily add a deodorizer into the tray.I've had the Cat Genie in the past, that product didn't work out for me. Between the pellets and the cleaning cycles, my cats were not happy with it, plus the deep cleaning of it was a mess.I've not done a deep clean on the product yet. The instructions seem simple enough. We almost throw out the plastic part that is required for the full deep cleaning. I'm hoping to not lose it again, not sure how to find a replacement part if I do.