Since Peanut was so small when we first got her, I am using several litter boxes around the house so it'd be easier for her to find one and less likely she'd go elsewhere. It seems to have worked well. But eventually I'd like to get both cats using the one covered litter box. I am pretty sure Peanut is big enough to get into it now, but she normally uses her smaller pan only one (no cover). The problem is Mack likes to "play" in that one and spin sand all over my living room, not to mentioned I'd prefer not to have an open one in the living room. When can I move the uncovered one? Will it cause problems for Peanut, since its the one she normally uses? Can I just start putting her in the bigger one often and see what happens or how should I go about making this transition? Should I move the bigger, covered one to where the smaller one used to sit, even though this isn't where I want to keep it permanently?