What Breaks on Automatic Litter Boxes, and What the Warranty Covers

Read enough owner discussion and the pattern is clear. The most common complaints are not broken motors but confused electronics: a scale that needs recalibrating after the litter level changes, a drawer-full indicator that reads full too early or too late, a box that drops off Wi-Fi, and cycles that stop partway through with a warning light. Motor and gear failures do happen, and they are the ones that usually need a replacement part or unit.

Several of those problems are self-inflicted and preventable. Most boxes need to sit on a hard, level floor, not a mat, for the scale to read correctly; Meowant and Oneisall say so explicitly. Filling past the maker's line causes jams. And litter the maker rules out is the quickest way to a clogged screen.

A box that runs a motor several times a day in a damp, dusty spot is worth buying with the warranty in mind. These are the included terms, before any paid extension; Whisker, CatGenie and Casa Leo all sell longer cover.

For boxes that depend on a proprietary consumable, the running cost over the warranty period is worth adding to the purchase price. These are the ones where the maker publishes enough to work it out.