Self-Cleaning Litter Box Guide

Self-cleaning litter box comparison chart

Every automatic litter box we track, side by side: how it cleans, the cat weights it allows, how many cats it's rated for, the litter it needs and whether the entrance stays open while it cycles. Click any column to sort. Covers 14 models from Casa Leo, ELS PET, Furbulous, Lesure, Neakasa, PETKIT, PetSafe, Whisker.

Self-cleaning litter boxes, sorted by Guide score (click headers to re-sort)
ModelScoreMechanismCat weightCatsLitterEntry openPrice tierBuy
Whisker Litter-Robot 48.7Rotating globe3–25 lb4ClumpingYesPrice tier: PremiumCheck price of the Whisker Litter-Robot 4 on Amazon
Whisker Litter-Robot EVO8.6Rotating globe3–19 lb2ClumpingYesPrice tier: PremiumCheck price of the Whisker Litter-Robot EVO on Amazon
PETKIT Purobot Max Pro 28.6Tilting drum3.3–22 lb—ClumpingYesPrice tier: Mid-rangeCheck price of the PETKIT Purobot Max Pro 2 on Amazon
Whisker Litter-Robot 58.5Rotating globe3–30 lb5ClumpingNot confirmedPrice tier: PremiumCheck price of the Whisker Litter-Robot 5 on Amazon
PETKIT PuraMax 28.5Tilting drum3.3–22 lb—ClumpingYesPrice tier: Mid-rangeCheck price of the PETKIT PuraMax 2 on Amazon
Neakasa M1 Open-Top Self-Cleaning Litter Box8.3Open-top2.2–33 lb—ClumpingYesPrice tier: Mid-rangeCheck price of the Neakasa M1 Open-Top Self-Cleaning Litter Box on Amazon
PetSafe ScoopFree Crystal Smart Self-Cleaning Litter Box8.0Rake + crystal traynot published2Crystal traysYesPrice tier: BudgetCheck price of the PetSafe ScoopFree Crystal Smart Self-Cleaning Litter Box on Amazon
Lesure Open-Top Self-Cleaning Litter Box8.0Open-top3.3–18 lb—ClumpingYesPrice tier: BudgetCheck price of the Lesure Open-Top Self-Cleaning Litter Box on Amazon
PETKIT Purobot Ultra7.9Tilting drum3.3–22 lb—ClumpingNot confirmedPrice tier: FlagshipCheck price of the PETKIT Purobot Ultra on Amazon
PetSafe ScoopFree SmartSpin Self-Cleaning Litter Box7.9Tilting drum2.5–25 lb—ClumpingNot confirmedPrice tier: Mid-rangeCheck price of the PetSafe ScoopFree SmartSpin Self-Cleaning Litter Box on Amazon
Casa Leo Leo's Loo Too7.8Tilting drum1–20 lb—ClumpingNot confirmedPrice tier: PremiumCheck price of the Casa Leo Leo's Loo Too on Amazon
PetSafe ScoopFree Crystal Classic Self-Cleaning Litter Box7.8Rake + crystal trayup to 15 lb2Crystal traysYesPrice tier: BudgetCheck price of the PetSafe ScoopFree Crystal Classic Self-Cleaning Litter Box on Amazon
ELS PET Orbitie Self-Cleaning Litter Box7.2Tilting drumup to 21 lb—ClumpingNot confirmedPrice tier: BudgetCheck price of the ELS PET Orbitie Self-Cleaning Litter Box on Amazon
Furbulous True Odor-Free Self-Cleaning and Self-Packing Litter Box6.2Enclosed scoop3.3–22 lb—ClumpingNoPrice tier: Mid-rangeCheck price of the Furbulous True Odor-Free Self-Cleaning and Self-Packing Litter Box on Amazon

"Cat weight" is the maker's range for automatic mode; below the minimum, the weight sensors may not notice your cat. "Entry open" means a maker or a named review confirms the entrance stays open through the whole cycle; "Not confirmed" means we couldn't verify it either way. Read are self-cleaning litter boxes safe? or run the cat safety checker.

Want these numbers as a spreadsheet? Download the same table as CSV or JSON(CC BY 4.0, free to cite).

Specs are maker ratings from spec pages, manuals and Amazon listings. Prices are typical US street prices as of November 12, 2026, from the dated sources on each review page, and change often.

Weight limits and value at a glance

Which cat weights each box allows (lb)Maker ranges for automatic mode. Below the left end, the sensors may not notice your cat; hatched bars have no published minimum.
Leo's Loo Too 1–20 Neakasa M1 2.2–33 ScoopFree SmartSpin 2.5–25 Litter-Robot 5 3–30 Litter-Robot 4 3–25 Litter-Robot EVO 3–19 Purobot Ultra 3.3–22 Purobot Max Pro 2 3.3–22 PuraMax 2 3.3–22 Furbulous Self-Packing 3.3–22 Lesure Open-Top 3.3–18 ELS PET Orbitie ?–21 ScoopFree Classic ?–15 ScoopFree Crystal Smart ?–?

Kittens under the minimum should use the box with automatic cleaning off. Check your own cat in the safety checker.

Guide score vs. street priceEach dot is one litter box (Guide score vs. lowest typical price; the price axis is compressed). Lower and further right is better value.
$$$$$$$$$$6.06.57.07.58.08.5Litter-Robot 4PuraMax 2Neakasa M1Lesure Open-TopScoopFree Classic
Guide score (out of 10)

Hover or tap a dot for details. Full numbers are in the comparison chart.

Highest-rated self-cleaning litter boxes

#1 · Top rated
Whisker Litter-Robot 4

Whisker Litter-Robot 4

8.7
  • Rotating globe
  • 3–25 lb
  • Up to 4 cats
  • Entry stays open

Multi-cat homes (up to four cats) and big cats that want the best-supported, most-copied design on the market.

  • Rated for up to four cats from 3 lb, with a 15.75 × 15.75 in entry big enough for most large breeds (Whisker)
  • Laser curtain and weight sensors, and WIRED counts it among boxes that stay open while cycling
  • Whisker app tracks visits and weight and warns when litter is low or the drawer is full (WIRED)
  • About $699–$749, roughly double a PETKIT PuraMax 2
Price tier: Premiumtypical street price; check Amazon for today's
Check price on AmazonRead the full review
#2 · Top rated
Whisker Litter-Robot EVO

Whisker Litter-Robot EVO

8.6
  • Rotating globe
  • 3–19 lb
  • Up to 2 cats
  • Entry stays open

One- or two-cat apartments that want Litter-Robot reliability in a footprint close to a regular box.

  • Smallest Whisker footprint: 20.6 × 24.3 in (Whisker)
  • WIRED: near-silent, virtually no odor, cat took to it quickly
  • Same Whisker app for usage and weight tracking
  • Limited to two cats of 3–19 lb (Whisker)
Price tier: Premiumtypical street price; check Amazon for today's
Check price on AmazonRead the full review
#3 · Top rated
PETKIT Purobot Max Pro 2

PETKIT Purobot Max Pro 2

8.6
  • Tilting drum
  • 3.3–22 lb
  • Entry stays open

Large cats and camera fans: WIRED's 17-lb tester used it easily.

  • WIRED's current top pick; its 17-lb cat used it easily
  • 1080p, 210° camera with multi-cat face recognition and stool/urine records
  • 8 L bin, up to 17 days for one cat (PETKIT)
  • Entry sits about 10 in off the floor, a step up for stiff senior cats
Price tier: Mid-rangetypical street price; check Amazon for today's
Check price on AmazonRead the full review
#4 · Top rated
Whisker Litter-Robot 5

Whisker Litter-Robot 5

8.5
  • Rotating globe
  • 3–30 lb
  • Up to 5 cats

Big and multi-cat households (up to five cats, up to 30 lb) that want health data on top of hands-off scooping.

  • Highest cat count here and the highest weight limit of any hooded box: up to five cats from 3 to 30 lb (Whisker)
  • Same 15.75 in entry as the LR4 with 1 in more headroom inside
  • WasteID separates urine and stool visits; WIRED saw it improve markedly after firmware updates
  • $799 before Whisker+, which WasteID and cat ID need (about $80 a year, per WIRED)
Price tier: Premiumtypical street price; check Amazon for today's
Check price on AmazonRead the full review
#5 · Top rated

PETKIT PuraMax 2

8.5
  • Tilting drum
  • 3.3–22 lb
  • Entry stays open

Most one- to three-cat homes with average-size cats: the best value among the well-reviewed boxes.

  • About $390, close to half the price of a Litter-Robot 4
  • Entrance stays open while the drum turns, with 11 safety sensors (PETKIT)
  • Triple odor control; WIRED found it smelled neutral or even good
  • Small entry: WIRED's 17-lb cat found it cramped
Price tier: Mid-rangetypical street price; check Amazon for today's
Check price on AmazonRead the full review
#6 · Top rated
Neakasa M1 Open-Top Self-Cleaning Litter Box

Neakasa M1 Open-Top Self-Cleaning Litter Box

8.3
  • Open-top
  • 2.2–33 lb
  • Entry stays open

Large cats and cats that refuse hooded boxes: no hood, no weight ceiling to speak of.

  • Open top with a 2.2–33 lb range; big cats fit easily
  • Tom's Guide's cats used it 51 times in a week, more than any of the other three boxes
  • Large 11.23 L bin, up to 14 days for one cat (Neakasa)
  • Open sides fling litter; plan on a big mat (Tom's Guide, WIRED)
Price tier: Mid-rangetypical street price; check Amazon for today's
Check price on AmazonRead the full review

How to read this chart

Mechanism is how the box cleans itself (see the diagram below). Cat weight is the maker's range for automatic mode; it's the number that matters most for kittens and small cats. Cats is the maker's recommended cats per box, where one is published. Litter tells you whether ordinary clumping litter works or you're tied to proprietary crystal trays. Entry open is our safety flag: whether a maker or a named review confirms the entrance stays open through the whole cycle. Not sure which fits? Run the cat safety checker or the litter box matcher, and see running costs in the cost calculator.

Four ways a litter box cleans itselfThe mechanism decides how safe, how messy and how expensive to run a box is.
Rotating globe

The whole globe turns slowly after each visit, sifting clumps through a screen into a drawer below. The best-known design (Litter-Robot). Large entries, but a tall unit.

Litter-Robot 4, 5, EVO
Tilting drum

A drum on a base tilts or turns part-way to sift, then returns. Most PETKIT and many Amazon brands. Good ones keep the entrance open the whole time.

PuraMax 2, Purobot, Leo's Loo Too, SmartSpin
Open-top

An open pan that flips or rotates to dump clumps. No hood to squeeze through and no door to close; more litter scatter.

Neakasa M1, Lesure
Rake + crystal tray

A rake sweeps waste into a covered trough on a disposable crystal tray. Nothing encloses the cat, but you buy trays forever.

ScoopFree Crystal Smart, Classic

Avoid designs with a door or a front that closes during cleaning: if a sensor fails, a cat can be trapped. More in are self-cleaning litter boxes safe?

FAQ

Which self-cleaning litter box scores highest in 2026?
By our research-based score, the Whisker Litter-Robot 4 currently ranks highest (8.7/10). The right box still depends on your cat's weight, how many cats share it, your litter and your budget. Sort the table by the column that matters most, or use the litter box matcher.
What does the cat weight range mean?
It's the range the maker says automatic mode is designed for. Below the minimum, the weight sensors may not register your cat at all, so a kitten or very small cat could be inside when a cycle starts. Above the maximum, the cat may not fit or may overload the mechanism. Use the box with automatic cleaning off until a kitten is over the minimum.
What is the difference between a globe, a drum, an open-top and a rake box?
A rotating globe (Litter-Robot) turns fully to sift clumps into a drawer. A tilting drum (PETKIT, Leo's Loo Too, SmartSpin) turns part-way and returns. An open-top box (Neakasa M1, Lesure) has no hood and flips its pan. A rake box (ScoopFree Crystal) drags waste across a disposable crystal tray. Open-top and rake designs never enclose the cat; for hooded ones, choose a model whose entrance stays open during the cycle.
Do self-cleaning litter boxes need special litter?
Most need clumping litter, and many specify clay or a granule size. PetSafe's ScoopFree Crystal boxes only work with PetSafe's disposable crystal trays, which costs more to run. PETKIT warns against crystal litter in the PuraMax 2, and Whisker says translucent or crystal litter can confuse the Litter-Robot's level sensor.