Open-top self-cleaning litter box · Neakasa

Neakasa M1 Plus

The open-top box for big cats

Updated October 2026

Quick verdict

The open-top box to beat.

Strength
Highest weight limit and no odor packs.
Trade-off
2.4 GHz Wi-Fi only.
Right buyer
Owners of large or wary cats.
Cats (maker-stated)
3 cats
Cat weight (maker-stated)
cats from 3.3–33 lbs
Waste bin
7.2l
Dimensions (seller)
22"L x 20"W x 26"H
Product weight
22 pounds
Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Why it matters

The M1 Plus has no hood: cats step onto an open litter bed, which Neakasa says suits cats' instincts and large breeds moving from a standard box. It supports up to three cats from 3.3 to 33 lb; Kitten Mode covers lighter kittens.

A brush strip seals the litter bed to the waste bin, so no carbon or deodorizing packs are needed. The 11.2 L bin and 7.2 L litter capacity give 7 to 14 days between emptying, and the 2.4 GHz app identifies each cat and tracks its visits.

Who it's for, and who should skip it

Good fit if

  • Large breeds
  • Cats wary of hooded boxes
  • Up to 3 cats

Look elsewhere if

  • Homes without a level spot near an outlet
  • Cats that are afraid of moving parts
  • Kittens under the maker's minimum weight

Pros and cons

Pros

  • 33 lb limit
  • No odor packs needed
  • Open-top

Cons

  • 2.4 GHz only
  • Open top can scatter litter
  • Large footprint

Limitations to weigh

  • Set it on a hard, level floor near an outlet. Weight sensors read wrong on carpet or uneven tile, which can stop or trigger cycles.
  • Automatic cycling has a minimum cat weight; keep automatic mode off for kittens under it and run cleans manually.
  • Empty the waste bin before it's full and keep spare bags; an overfull bin is the most common cause of a stalled cycle.
  • Running costs come from the bags, liners, filters and litter the maker specifies. The compatibility checker lists refills that state they fit.

Specifications

Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.

MaterialPlasticRetailer
Dimensions (seller)22"L x 20"W x 26"HRetailer
Product weight22 poundsRetailer
In the pack1 CountRetailer
Features (seller)Anti-Leak Sealing, Anti-Pinch Safety Design, Odor Seal at the Source, Supports Kitten Mode, XXL for Multi-Cat HouseholdsRetailer
In the boxCat Litter Mat x1, Neakasa M1 Plus x1, Power Adapter x1, User Manual x1, Waste Bag x2 Rolls (30 pcs in total)Retailer
Model numberPS0120Retailer
Warranty2 YearRetailer
Cats (maker-stated)3 catsRetailer
Cat weight (maker-stated)cats from 3.3–33 lbsRetailer
Waste bin7.2lRetailer
Waste bin lasts (maker)7–14 daysRetailer

Alternatives worth comparing

More self-cleaning litter boxes we cover

All self-cleaning litter boxes, compared in one table

Final verdict

The open-top box most owners should start with.

Where to buy

Our links open this exact model's product page. Prices and stock change; check what's included before you order.

Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions buyers ask

What weights can use the M1 Plus?
3.3 to 33 lb, per Neakasa; enable Kitten Mode for lighter kittens.
How many cats?
Up to 3.
Does it need odor packs?
No. A brush-strip seal keeps odor in the bin.