I have two covered litterboxes and they still manage to fling some of the litter out. Sunny and Cirrus leap out of the litterbox so fast that they scatter litter every where. Sunny also digs to China but he also piles all of the litter into one big pile so I have to make sure and shake the litterbox first before I take off the hood or else litter falls out every where. At least Sunny now covers his poop because he used to not do this before.