Popur
Popur's first open-tray robot, crowdfunded in 2022 and back in stock in the US in late 2026, and about $310 less than the S7 that now heads the line. The tray is 19.7 by 15.7 inches with a 24-inch diagonal, and waste goes into a bagged can behind it instead of a drawer under the cat. Popur rates the can at 30 days for one 10 lb cat, from a test with 4 to 6 visits a day. It publishes no cat weight range, no bin volume and no entry height, and the unit stands 25.3 inches tall while the tray is lifted.
Approx. price
~$340
maker's store, not a live price
Best for: Large or hood-averse cats in a home with floor space for a 30-inch-long unit
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Popur publishes neither the lightest cat this box detects nor a minimum age. Until it does, treat it as unsuitable for automatic cleaning around a kitten and run it by hand.
Detection: sensor type not published. The maker states anti-pinch protection on the moving part, by sensor or by design.
How minimum weights work, and what to do below themThe maker publishes no drawer volume, so the days cannot be worked out. Its own claim is up to 30 days for one cat.
The two lists above are drawn from the maker’s own pages, manuals and prices, not from owner reports. Where owner discussion has been read it appears in its own section below, so the two are never mistaken for each other.
No owner discussion has been read for the Popur X5 Self-Cleaning Litter Box yet. This section stays empty until there is something real to put in it.
Open-top
Best for: Cats that want a flat open tray, in homes with room for a long unit
Open-top
Best for: Large-breed households that want an open box
Open-top
Best for: Large cats in a home that wants the M1 design for less
Check price on Amazon