My cats in the Litter-Robot 4 by Whisker.We hope you love the products we recommend! All of them were independently selected by our editors. Just so you know, HuffPost UK may collect a share of sales or other compensation from the links on this page if you decide to shop from them. Oh, and FYI — prices are accurate and items in stock as of time of publication.I grew up with dogs but I’m a cat person at heart and since I left home 17 years ago, I’ve almost always lived with cats.They’re the purr-fect companions. More like flatmates than fur-children, snuggly, weird and so very distinctive in their personalities — it’s hard to imagine my life ever being cat-free.There’s just one downfall. Litter. It’s disgusting, there’s no two ways about it. Scooping up poop and clumps of pee... foul. Not to mention the smells that come from it. How can my precious furry pals create such horror?Then I discovered the Litter-Robot 4.