I'm just so tired of all the poop. Now that I'm dealing with three cats, an 11-month old's diapers and potty time with my four-year old, I just needed some relief from mountains of excrement. Enter the Litter Robot 4, the latest iteration of Whisker's automated litter box (a product we initially covered in 2005!). It's a small, spaceship-looking device that automatically rotates after your cat does its business, separating waste into a storage bin and leaving the remaining clean litter behind.