LitterCompare:Best cat litter for automatic litter boxes

Most automatic and self-cleaning litter boxes, including the Litter-Robot, need standard-weight clumping clay litter to sift and clean correctly. Lightweight litters, crystals, and non-clumping litters are usually not recommended and can jam the mechanism. This page lists the litters that work in common automatic litter boxes, ranked by cost per month and rated for dust, scent, and odor control. Always check your box maker's manual for its exact requirements, then sort by cost per month to find the best value robot-safe litter.

8 litters. Est. monthly cost assumes 1 cat. Prices checked 2026-07-17. Click a row to view on Amazon. How we compare

$/mo▲PriceWeightTypeClumpingScentDustOdorHealth monitoringAffiliate Link
$6.63best$17.9938 lbClayYesUnscentedLow5/5NoArm & Hammer Slide Multi-Cat Unscented Clumping Clay Cat Litter, 38 lb
$9.58$25.9938 lbClayYesScentedMedium3/5NoPurina Tidy Cats 24/7 Performance Clumping Multi-Cat Litter, 38 lb
$10.10$12.9918 lbClayYesUnscentedMedium5/5NoDr. Elsey's Ultra Unscented Clumping Clay Cat Litter, 18 lb
$13.76$18.1818.5 lbClayYesUnscentedMedium5/5NoFresh Step Advanced Simply Unscented Multi-Cat Clumping Litter, 18.5 lb
$15.11$18.8917.5 lbClayYesScentedLow5/5NoFresh Step Heavy Duty Odor Block Advanced Multi-Cat Clumping Litter with Febreze, 17.5 lb
$18.89$26.9920 lbClayYesScentedLow4/5NoDr. Elsey's Precious Cat Kitten Attract Clumping Clay Litter, 20 lb
$20.99$23.9916 lbClayYesUnscentedLow5/5NoBoxie Probiotic Clumping Clay Cat Litter, 40+ Day Odor Control, Dust Free, 16 lb
$23.04$26.8814 lbNatural (wheat)YesUnscentedLow3/5NosWheat Scoop Natural Wheat Multi-Cat Clumping Litter, Compatible in Automatic Litter Boxes, 14 lb