The open-top litter robot built for cats that need room

Many automatic litter boxes are built around a covered rotating globe. That can work beautifully for confident cats, but some cats dislike the tunnel-like entrance, limited visibility, or confined interior. The M1 Plus takes the opposite approach: the litter area stays open above, with a broad entry and no lid to duck under.

That makes it a particularly practical match for large cats and cats that have avoided enclosed boxes. It can also be easier for cats with limited mobility to navigate than a tunnel-style unit, although the 13.86-inch entry height is still worth measuring against your cat's stride. A separate step may help older or arthritic cats.

After a cat leaves, the M1 Plus uses weight and infrared sensing to pause operation when a cat is detected. During a cleaning cycle, the litter chamber rotates to separate clumps from clean litter and deposits waste into the lower bin. Neakasa's Pull & Wrap system lets you draw the bag closed before lifting it out, reducing direct contact with waste.

The advertised 11.23-liter waste capacity can support up to roughly 14 days for one cat under suitable conditions, but that is a best-case estimate rather than a promise for every household. Two or more cats, large clumps, humidity, litter choice, and how full you allow the bin to become will shorten the interval. In practice, check the bin before travel instead of relying on the maximum claim.

The Neakasa app connects the box to your phone so you can check activity, monitor litter and waste status, adjust cleaning settings, and receive device alerts. Usage data can be useful in a multi-cat home, especially when you are watching for changes in bathroom frequency or trying to confirm which cat is using the box.

The important setup detail is Wi-Fi: the app requires a 2.4 GHz network, not a 5 GHz-only connection. The box can continue operating from its saved settings if the internet drops, but app updates and remote monitoring will not be available until the connection returns.

The M1 Plus combines a covered waste area, sealing components, and the Pull & Wrap bag system to reduce the amount of waste sitting in the open. That can make the room smell noticeably better than a traditional box that waits for the next scoop.

Odor performance depends heavily on using a genuinely fast-clumping litter and replacing the waste bag before it becomes overloaded. Neakasa and independent reviewers point toward clumping granular litter; crystal, pellet, loose non-clumping, or some tofu litters may not sift as reliably. No automatic box can compensate for weak clumping or an overfilled bin.

The most useful review pattern is not simply that some owners love it and some do not. Owners who like the M1 Plus commonly praise the roomy opening, easy initial setup, reduced scooping, and app alerts. Critical reviews more often mention litter tracking, bags that need careful placement, inaccurate or premature full-bin alerts, and cleaning that becomes more involved when sensors or the liner get dirty.

A false full-bin alert is more than a minor annoyance because the unit may stop in a position that prevents normal access. Keep a conventional backup box available during the transition and check the physical unit when the app reports a fault. If you are buying the M1 Plus after hearing about the original M1's historical gear issue, verify the box is clearly labeled M1 Plus and update its firmware before enabling unattended automatic cleaning.

The physical assembly is relatively straightforward: attach the support legs, place the unit on a firm level surface, install the waste bag, add the correct litter, and connect power. The wireless setup is the part most likely to trip people up. Have your 2.4 GHz network name and password ready, keep the box near the router during pairing, and install available firmware updates before relying on remote monitoring.

Give a cat time to accept the new appliance. Start with the machine powered off or in manual mode, keep some familiar litter available, and leave the old box nearby during the transition. Once your cat is using the M1 Plus consistently, gradually remove the old box and test a supervised cleaning cycle.

The M1 Plus is not the most polished or enclosed option, but it targets a different problem. It offers a much more accessible opening than the PETKIT PuraMax 2 and costs substantially less than the Litter-Robot 4 at the cited official prices. The Litter-Robot has a longer-established ecosystem and stronger warranty options, while PETKIT offers a lower entry threshold and more elaborate odor accessories.

For a large cat that refuses enclosed designs, the M1 Plus can be the most sensible fit even when another machine scores higher on refinement. For a home where tracking control, support infrastructure, and long-term ownership confidence matter more than an open entrance, the premium competitors deserve a closer look.