Sentus ML-M4 Open-Top Self-Cleaning Litter Box

Self-Cleaning: The Sentus ML-M4 is an open-top automatic litter box with app controls, safety detection claims and a waste-separating cleaning cycle. Its listed capacity for cats up to 20 lbs and open layout are relevant for households seeking easier access, while its dimensions conflict across listing details and should be confirmed before purchase.

At a glance

Separates waste from reusable litter after the cat exits, according to the listing.
App controls connect over 2.4GHz Wi-Fi, with a built-in display and manual operation also described.
Open-top design and a separate litter-trapping step aim to ease entry and reduce tracked litter.
Listing claims infrared sensors, microwave radar detection and anti-pinch protection pause cleaning when activity is detected.

Price

$179.98Save 40%

Reference price: ~~$299.99~~

Price checked: Nov 14, 2026

View offer

Often bought together

Most Self-Cleaning Litter Boxes，Automatic cat Litter Box, Open top

$9.99

Pros and cons

Pros

Manual controls are described as an alternative to app operation when Wi-Fi is unavailable.
The open-top layout avoids an enclosed entrance, and the package list explicitly includes an entry step and four support legs.
The listing gives a 10L waste-drawer capacity and claims quiet operation at ≤40 dB.

Cons

The listing's stated cat limit of up to 20 lbs may not suit larger cats.

Technical specifications

4 specifications

Identity
Brand	Sentus
Model	ML-M4

Dimensions and installation
Weight listed	19.8 pounds

Materials and protection
Material listed	Polypropylene (PP)

What to know before buying

Listing details to confirm

Listing dimensions are contradictory: one entry gives 21.06"L x 17.91"W x 13.19"H, while another gives 21.06 x 17.91 x 13.19 inches; 19.84 pounds. The separate listed weight is 19.8 pounds. Confirm the correct dimensions and weight for your space and setup.

What’s in the box

Included

Deodorizer (1)
Cleaning brush (1)
Litter liners
Quick-start guide (1)
User manual ×1
Sentus M4 self-cleaning litter box (1)
Support legs (4)
Entry step (1)
Waste drawer (1)
Power adapter ×1

Who is it for?

A good fit for

Cat owners seeking an open-top automatic litter box with app controls and manual operation.
Households looking for automatic waste separation and a litter-trapping step.

Less suited to

Owners of cats weighing over the listing's stated 20 lbs limit.
Buyers who need confirmed dimensions before allocating a tight space, unless they verify the conflicting listing details.

Sentus ML-M4 Open-Top Self-Cleaning Litter Box · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 24 ratings

5 stars74%74%
4 stars19%19%
3 stars7%7%
2 stars0%0%
1 star0%0%

The supplied evidence contains aggregate ratings but no customer-comment summary. The rating distribution skews toward higher stars, with some three-star ratings, but it does not establish specific strengths, problems or reasons for customer opinions. Treat it as limited context rather than evidence of how the app, cleaning cycle or odor control performs in daily use.

Frequently asked questions

Can the Sentus ML-M4 be operated without Wi-Fi?

The listing says manual controls allow operation without Wi-Fi. App connectivity is specified as 2.4GHz Wi-Fi.

What is the stated cat weight limit?

The listing describes it for cats weighing up to 20 lbs.

What is included in the package?

The listed contents include the litter box, deodorizer, cleaning brush, litter liners, quick-start guide, user manual, four support legs, entry step, waste drawer and anti-bite power adapter.

Are the product dimensions confirmed?

No. The listing provides conflicting dimension formats and also shows a different weight in one dimensions entry. Confirm these details before purchase.