I keep mine in my bathroom, in the bathtub. I realise that sounds kind of gross (the idea grossed me out at first), but I just take the boxes out each morning when I want to have a shower, spray the tub with disinfectant, give it a scrub, and rinse it. It adds about ten minutes of work, having to wash the bathtub every morning, but it totally contains all the litter that the kitties track, so my floors are totally clean (before I started doing this, the floors were constantly messy - I'd clean them, and half an hour later, there would be litter tracked around again), so it really saves time, in the long run, and also space - I live in an aprtment, so I'm definitely not rolling in space - I don't use the bathtub 23.5 hours a day, however, so this way I'm not taking up space that I could otherwise using (before they were taking up half the floor space in the bathroom), and they're behind the shower curtain, so now I don't have to look at them, since I find them kind of unsightly. I have a flushable, biodegradable litter, so I just rinse the tracked litter down the drain every morning, which is nice and easy. It's worked really well for me. That said, if I lived in a house with a basement or a laundry room, I would probably put them there instead.