Multi-cat home with kitty ages ranging from less than a year old to 16 years old. This litter box has become everyone's favorite. It is roomy and the low entrance makes it easier for my geriatric cat with arthritis to get in and out of it.  The side entrance also allows me to place it against a wall without it taking up excess space in my laundry room. Overall I love this litter box and will be buying more as I replace older litter boxes in my home.