LitterHouse cat ltiter box 3 combo - FREE SHIPPING The LitterHouse effectively contains felines litter mess with it's uniquely designed litter pan and walkway, that collects litter from your cats paws as it leaves the litter pan. The LitterHouse's design prevents "coprophagia" (Dogs eating feces out of the litter box). The house enclosure lifts, easily off the litter pan/walkway base, to allow for access to the cat's litter box for scooping. The LitterHouse's simple effective design looks great in any room of your house, no need to hide this litter box. It also comes with a charcoal filter in the chimney and the entire LitterHouse litter box is made of "high density" polystyrene plastic that also helps to reduce odors.