Open boxes This kind of boxes allows easy access for the cats and makes it easier for them to observe the surroundings while eliminating. (petsmagazine.com.sg)
My kids love cereal but I don't feel good about giving them off - the - shelf boxed kinds. (chefambershea.com)
It's no surprise then that cats usually prefer to eliminate on loose, sandy soil, and therefore using a litter box kind of comes naturally. (cat-lovers-only.com)