PetSafe ScoopFree Crystal Pro Legacy Self-Cleaning Litter Box, Uncovered (PAL00-16805)

A rake and a disposable tray, not a rotating drum

Amazon lists this as the PetSafe ScoopFree Crystal Pro Legacy Self-Cleaning Litter Box, uncovered, with model number and manufacturer part number PAL00-16805 and UPC 729849168053. The manual attached to the listing names PAL00-16805 as the ScoopFree Self-Cleaning Litter Box on its cover, alongside PAL00-16806 covered and PAL00-16965 top-entry. PetSafe's own product page carries the same item model number. The manufacturer is Radio Systems Corporation of Knoxville, Tennessee.

The mechanism is different from most boxes in this category. There is no drum and no reusable litter. A disposable tray pre-filled with crystal litter slides under an open frame; detection sensors notice when your cat is inside; twenty minutes after the cat leaves, a rake sweeps solid waste back into a covered waste trap at the front of the tray. Every few weeks you lift the frame, cap the whole tray with the lid that ships underneath it, and put it in the bin.

In the box, per PetSafe's page, are the litter box, crystal litter, a disposable litter tray and an operation guide; the manual's parts list adds the power adaptor, the waste trap lid, the rake, the health counter display with its reset button and the manual rake button. The privacy cover is not included on this uncovered model: the manual says the cover comes with the covered and top-entry versions and may be bought separately as accessory PAC00-16810.

Only PetSafe trays go in it, and that is a warranty condition

The litter rule here is absolute and it is repeated three times in the manual. The safety page says: "Do not use any other type of cat litter or tray. Only use PetSafe ScoopFree Disposable Crystal Litter Trays and products with this litter box. The crystal litter is specially designed and pre-measured for optimal performance. Using a different type, size, too much or not enough litter can cause the litter box to malfunction. Using a different tray or litter may void the product warranty." The litter-changing page repeats it and adds: "DO NOT use any type of clay litter, natural litter or any other crystal litter."

That makes the tray a recurring purchase you should price before you buy the box. The manual's parts list names the tray part numbers in one, three and six packs across Original Scent Blue, Lavender and Sensitive versions, and PetSafe sells them through a home delivery subscription as well as at retail. The crystal litter does not clump; the manual says it absorbs urine and dries solid waste.

PetSafe's page states "five times better odor control than traditional clumping litter" and that the crystals are "99% dust-free". Those are the maker's figures, published without test conditions in the material we read, and we neither verify nor repeat them as fact.

Kittens, older cats and how many cats it is meant for

The manual's safety page is explicit about young cats: "If your kitten is under 6 months of age, leave the unit UNPLUGGED and scoop waste until kitten is 6 months old." A later page repeats that it is recommended for cats older than six months, and adds that kittens' softer waste goes through trays faster and is more likely to stick to the rake. Amazon's details field also carries a "Manufacturer recommended age: 6 months and up".

The same page carries a second limit that is easy to miss: "Not intended for use by handicapped, incapacitated or very old cats that might experience difficulty in entering or leaving the litter box." The manual also says ScoopFree boxes should be used with healthy cats and recommends a vet visit first if your cat is not in good health. We are quoting the maker; we are not giving advice about your animal.

On size and numbers, the specifications page says the box is for single or multiple-cat homes and, in the manual’s wording, suits cats under 15 lb, and that it is recommended to have more than one litter box for more than two cats. Amazon's details field lists a weight capacity maximum of 15 pounds, which matches. The FAQ page phrases it as designed for one or two cats with a recommendation of one more box than cats.

Where it goes, and why humidity costs you money

The manual asks for a clean, dry and level location with a standard outlet nearby, indoors only, and says not to place the litter box on an unsteady surface. The frame must sit on the litter tray rather than on the floor, and you should hear a click as the waste trap lid magnets connect to the tray.

Humidity directly shortens the life of the consumable. The manual says placing the box in a high-humidity area such as a bathroom or near a shower may result in shorter tray life, and the tips page extends that to basements and suggests a room with moving air, such as one with a fan, to pull moisture away. If the only spare corner in your home is the bathroom, this design will cost you more in trays than another one would.

Published sizes differ depending where you look. PetSafe's specification block gives the uncovered version as 27.6 x 19.1 x 6.2 inches, with the front-entry hood version at 27.6 x 19.1 x 16.0 and the top-entry at 27.6 x 19.1 x 15.6. Amazon's overview table matches the uncovered figure, but Amazon's expanded details separately give "20.38 x 7.13 x 28 inches" and an item weight of 13.3 pounds. Use PetSafe's uncovered figure for the space it occupies and allow room above it to lift the frame off.

How often the tray has to be replaced

The manual prints a recommended replacement chart with three intervals: 20 to 30 days, 10 to 15 days and 7 to 10 days, rising with the number of cats, and footnotes that the interval depends on cat age, weight, health and diet. The cat-count icons in that chart are graphics that did not come through as text, so we are giving you the three intervals rather than assigning each one to a number of cats; check the chart on page 9 of the manual before you budget. PetSafe's page headline is "fresh for up to 30 days", which corresponds to the longest of those intervals.

The manual also gives you two signs to watch rather than relying on the calendar. Change the tray when the crystals have mostly turned yellow, which it describes as nearing saturation, or when the waste trap is full, which shows as a waste trap cover that will not close completely with solid waste visible underneath the lid. It adds that if solid waste is collecting outside the waste trap, it is time to change the tray.

Several things shorten the interval according to the manual: diets high in crude fibre, ash and by-products; cats over ten years old; and cats with diabetes, kidney and thyroid problems. It suggests stirring the crystals once a week for cats that are ill or have high urine output, mixing in litter from behind the rake and along the sides but not from under the waste trap.

Changing the tray itself is four steps: jiggle the box to shake litter out from behind the rake, lift the frame and remove the tray, take the lid from underneath and cap the tray, and bin it. The manual says not to add litter or remove waste during normal operation.

Controls, the health counter, cleaning and warranty

There is one button and one LED, and the manual publishes the code list. Solid blue means powered and normal with the rake at home; blinking blue means the twenty-minute countdown is running or the rake is moving; fast blinking blue means the rake is paused because the button was pressed mid-cycle; blue with red flashes means a mechanical error during the rake cycle, cleared by checking for obstructions and pressing the button; solid red after that flashing means an error the button cannot clear and a call to PetSafe; solid red without the flashing first means the sensors are blocked. The manual rake button also runs a cycle on demand, pauses the rake, and returns it home, and a manually paused rake returns home by itself after ten minutes of inactivity.

The health counter is a simple mechanical tally rather than an app. It increases by one every time the rake completes a cycle, including manual cycles, and you reset it by holding the reset button beside the display for three seconds. The manual suggests resetting it each time you replace the tray, and says to share your cat's litter box usage with your veterinarian if the frequency looks irregular. There is no Wi-Fi, no app and no account on this model; PetSafe sells a separate ScoopFree Crystal Smart box for that.

Cleaning is a wipe-down between trays. Unplug the adaptor, lift the frame off the tray, pull the waste trap lid straight up out of its notches (the manual warns not to lift one side first, because the pegs can catch and break off), wipe all surfaces with mild soap and water, wipe the rake with a sponge or soft brush, clean the detection sensors on the interior sides, dry everything before reassembly. The manual says: "DO NOT use bleach or chemicals to clean as they can act as a repellent to your cat," and not to submerge or expose the electrical components to water or cleaning solutions.

The manual's warranty section says the product carries a One Year Non-Transferable Limited Warranty and that the complete terms are held on petsafe.com or available from the local customer care centre; Amazon's details field also says "1 Year Limited Warranty", and PetSafe's own page shows a 45-day return window on direct purchases. The manual's safety pages also carry a warning that pregnant women, babies, small children and immune-deficient individuals should avoid contact with cat litter waste; read that page in full rather than our summary of it, and check the seller and condition on the offer you actually select.