The Pet Loo Pet Toilet is your backyard in a box. This portable indoor/outdoor toilet works for dogs, cats and small pets. Ideal for apartments, potty training and occasions when you can't let your pet out, the Pet Loo Pet Toilet is a convenient alternative to pee pads and midnight bathroom breaks. The top layer of synthetic grass allows urine to drain through into the base. It feels like real grass so it's appealing to dogs. The reinforced base is slightly angled so urine trickles down into the waste container. The waste container catches the urine and is removable for easy cleanup.