Used Cat Genie for free. Works and have most of all the accessories with it, such as the genie dome and door. Complete with 2 1/2 boxes of the granules, a couple of cleaning cartridges, and the deep clean cartridge. Our two fabulous indoor cats have passed and we are going to take a break for a while before trying again so we are making room. This package would be over $500.00 new. Follow the link to see it in action.