Head-to-head · Best Litter Boxes

IRIS USA Open-Top Cat Litter Pan Jumbo vs Petkit PuraMax 2

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

IRIS USA Open-Top Cat Litter Pan Jumbo comes out ahead by a narrow margin (4.4 vs 4.2). The gap is mostly about Budget-minded households of any size, owners with kittens or senior cats that struggle with hooded or top-entry designs, and anyone setting up a second or third box where containment is not the priority. — read the strengths below before deciding.

Higher ratedRanked #5 in Best Litter Boxes

IRIS USA Open-Top Cat Litter Pan Jumbo

4.4

$17

The IRIS USA Open-Top Jumbo Pan is the ruthlessly practical pick when you don't need any features beyond a roomy, easy-to-clean rectangle that any cat will use. At under $20 it's the cheapest box in this round-up by far, and the 8.4-inch wall height contains digging better than basic flat pans — but with no hood, no flap, and no top entry, you get zero spray or odor containment.

Strengths

— Under $20 — the cheapest unit in this round-up by a wide margin
— 8.4-inch tall walls contain digging and spray better than standard pans
— 20.75 x 18 inch floor accommodates large cats and multi-cat use

Watch-outs

— Open top offers no odor or spray containment for high-aimers
— Single-piece molded plastic has no separate hood for privacy
— Lightweight 1.5-pound construction can shift when a large cat enters

$17 · Check Price on Amazon Full review →

Ranked #2 in Best Litter Boxes

Petkit PuraMax 2

4.2

$299

The PuraMax 2 is the right call for buyers who want a real automatic, app-tracked litter box without paying Litter-Robot money. CNN Underscored placed it as the runner-up to the LR4 thanks to its compact footprint, 35 dB quietness, and three-step odor system, though Cats.com's longer test flagged stuck clumps and limited fit for cats over 18 pounds.

Strengths

— $299 sale price runs less than half the Litter-Robot 4
— 35 dB cleaning cycle is the quietest reviewers measured in the category
— Compact 21 x 24 inch footprint fits in apartment bathrooms the LR4 won't

Watch-outs

— Cats.com testing reported pee clumps sticking to the pad and interior walls
— Cats over about 18 pounds may avoid the 7.8-inch low-entry threshold
— Magnetic litter-empty mechanism leaves residual litter, slowing deep cleans

$299 · Check Price on Amazon Full review →

How they stack up

IRIS USA Open-Top Cat Litter Pan Jumbo

By far the cheapest in this round-up — about 1/40th the cost of the Litter-Robot 4 and roughly a third the price of the IRIS USA Jumbo Hooded sibling. Loses every containment and smart feature in exchange, so this is the right pick when you specifically want an open, low-barrier design that any cat will accept. The Modkat top-entry box at $109 trades the open access for litter-tracking control; the Petkit PuraMax 2 and PetSafe ScoopFree Crystal Smart trade it for automation.

Petkit PuraMax 2

Half the price of the Litter-Robot 4 and noticeably quieter at 35 dB versus the LR4's QuietSift, but CNN Underscored flagged that the LR4 outperforms it on clump separation and litter-tracking control. Unlike the PetSafe ScoopFree Smart it accepts any clumping litter (clay, tofu, bentonite) rather than a proprietary crystal tray. Against the mechanical Modkat and IRIS USA pans, this is the budget-conscious entry into actual automation.

Specs side-by-side

Spec	IRIS USA Open-Top Cat Litter Pan Jumbo	Petkit PuraMax 2
Type	Manual Open	Self-Cleaning Smart
Cat Weight Range	Up to about 22 lbs	3.3-22 lbs
Litter Type Required	Any (clay, tofu, crystal, walnut, pine)	Any clumping (clay, tofu, bentonite) — no crystal
Dimensions (LxWxH)	20.75 x 18 x 8.4 in	21.2 x 24.4 x 21.7 in
Weight	1.5 lbs (empty)	—
Material	BPA-free recyclable polypropylene	—
Warranty	1 year limited	2 years
Litter Capacity	—	76L chamber, 7L waste bin
App / Smart Hub	—	Petkit app (2.4 GHz Wi-Fi)
Cleaning Cycle Time	—	About 2 minutes
Waste Drawer Capacity	—	Up to 15 days, single-cat home
Noise	—	35 dB during cycle

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