Litter - Robot 3 Open Air Self Cleaning Litter Box. The item "Litter Robot 3 Open Air Self Cleaning Litter Box" is in sale since Sunday, March 24, 2019. This item is in the category "Pet Supplies\Cat Supplies\Litter Trays". The seller is "stuarthallett1990" and is located in Montrose. This item can't be shipped, the buyer must pick up the item.