My cats and I tested the Litter-Robot 4 and Litter-Robot 3 Connect automatic litter boxes. Here's how the two bestsellers compare.

I sat back patiently waiting for my cat children to check it out ... of their traditional litter boxes entirely, preferring the constant cleanliness of the Litter Robot 4 to a litter box staffed ...

Cleaning the cat litter tray can be a chore - and a smelly one at that - but Litter-Robot have a range of electronic litter ...