I bit the bullet and bought a Litter Robot. Love it, however the smell is atrocious. (and it's in my husband's office...no where else to put it). I have two kittens, each about 5 months old and I am feeding purina kitten chow. I used to give them the chow mixed with canned but cut out the canned, thinking that was the problem. I have been told to get Science Diet dry. I clean the poop out everyday and put fresh litter in every week. I am using some litter (Member's mark) we got from Sam's but have Arm and Hammer ready to go. Have tried deodorants to no avail. Please help! Susie