We have two cats in a one bedroom apartment and this works great for us. No more having to scoop the litter every day. We had to take the cover off because one of our cats is rather large and kept knocking it off. We were worried about him spraying the wall, but so far it hasn't happened yet. I highly recommend this product to anyone with cats. Just make sure you have an extra cartridge on hand and replace the litter if your cats kick it out like ours do.