PetSafe ScoopFree Crystal Pro Legacy Self-Cleaning Litter Box, Uncovered (PAL00-16805) vs Whisker Litter-Robot 4 with Step and Fence, Black (LR4-0301-00-CA)
These are side-by-side facts taken from each product guide: published specifications, strengths and caveats as their sources state them. This page is not a test, a ranking or a verdict about which model is better.
PetSafe ScoopFree Crystal Pro Legacy Self-Cleaning Litter Box, Uncovered (PAL00-16805)
One or two healthy adult cats under 15 lb in a dry, low-humidity room
The ScoopFree Crystal Pro Legacy rakes solid waste into a covered trap twenty minutes after your cat leaves, using a disposable tray pre-filled with crystal litter that you throw away whole. PetSafe's manual says to use only its own trays and litter and warns that anything else may void the warranty. There is no app: a mechanical health counter tallies rake cycles.
Published specifications
- Maker page: item model PAL00-16805, uncovered 27.6 x 19.1 x 6.2 in; hooded versions are separate models
- Manual: rake runs 20 minutes after the cat leaves; timer resets if the cat returns; manual rake button on top
- Manual: suits cats under 15 lb; single or multi-cat, with more boxes recommended above two cats
- Manual: kittens under six months - leave the unit unplugged and scoop until six months old
- Manual: only PetSafe ScoopFree disposable crystal trays; no clay, natural or other crystal litter
- Manual: tray replacement chart gives 20-30, 10-15 and 7-10 day intervals; one-year limited warranty
Strengths
- Whole-tray disposal means no scooping, no washing a drum and no litter to pour
- PetSafe publishes the full manual, the LED code list and the exact tray part numbers for this model
- Mechanical health counter tallies every rake cycle without an app, account or Wi-Fi
Caveats
- Locked to PetSafe's own crystal trays as an ongoing cost, and other litter may void the warranty
- Manual says to keep it unplugged for kittens under six months and calls it unsuitable for very old or incapacitated cats
- Humid rooms shorten tray life, so a bathroom placement raises the running cost
Whisker Litter-Robot 4 with Step and Fence, Black (LR4-0301-00-CA)
Multi-cat homes with floor space clear of every wall
Whisker's Litter-Robot 4 sifts clumps into a sealed drawer after each use and reports litter and waste levels to the Whisker app. Its manual sets one hard rule: a cat must weigh at least 1.36 kg, about 3 pounds, to use Automatic Mode, and lighter kittens need a supervised manual routine instead. It must not touch a wall, wants a hard level floor for its scale, and takes clumping litter only.
Published specifications
- Listing model and part LR4-0301-00-CA; manual's SKU table lists it as Litter-Robot 4 with Step, Black
- Manual: cats must weigh at least 1.36 kg for Automatic Mode; FAQ says under 3 lb is not recognised by the scale
- Maker page: 22 x 27 in footprint, 24 lb empty, 15 V DC; FAQ entryway 15.75 x 15.75 in, no upper weight limit stated
- Manual: clumping litter to the MAX line, about 3.6-4.5 kg or 4 L; non-clumping, newspaper and wood pellets excluded
- Manual: custom liners or any 37-49 L trash bag; carbon filter about one month; clean cycle 2 minutes
- FAQ: 2.4 GHz Wi-Fi only, 5 GHz not supported; WhiskerCare 1-year, 3-year plan sold separately
Strengths
- Whisker publishes the exact SKU, the weight rule, entryway size and interior globe size for this model
- Runs from a five-button panel without Wi-Fi, and the Connect button turns Wi-Fi off
- Globe, bonnet and drawer lift off for washing, and the carbon filter is described as optional
Caveats
- Automatic Mode needs every cat at 1.36 kg or more; under that the maker's own answer is a supervised manual routine
- Must not touch any wall or corner, and the manual says scale accuracy drops on carpet without the separate Carpet Tray
- Ongoing spend on liners, carbon filters and base seal strips, and battery backup is a separate kit
Read the full Whisker Litter-Robot 4 with Step and Fence, Black (LR4-0301-00-CA) guide
How to choose between them
Choose the PetSafe ScoopFree Crystal Pro Legacy Self-Cleaning Litter Box, Uncovered (PAL00-16805) if your situation matches: One or two healthy adult cats under 15 lb in a dry, low-humidity room. Its main caveat: Locked to PetSafe's own crystal trays as an ongoing cost, and other litter may void the warranty.
Choose the Whisker Litter-Robot 4 with Step and Fence, Black (LR4-0301-00-CA) if your situation matches: Multi-cat homes with floor space clear of every wall. Its main caveat: Automatic Mode needs every cat at 1.36 kg or more; under that the maker's own answer is a supervised manual routine.
Both entries repeat what each guide records. Confirm the model, included parts and availability on the current listing before ordering.
Primary sources
- PetSafe ScoopFree product manual SFE400-2352/1 covering PAL00-16805 Source for PetSafe ScoopFree Crystal Pro Legacy Self-Cleaning Litter Box, Uncovered (PAL00-16805)
- PetSafe product page for the ScoopFree Crystal Pro Legacy, item model PAL00-16805 Source for PetSafe ScoopFree Crystal Pro Legacy Self-Cleaning Litter Box, Uncovered (PAL00-16805)
- Whisker Litter-Robot 4 instruction manual (PDF, SKU table lists LR4-0301-00-CA) Source for Whisker Litter-Robot 4 with Step and Fence, Black (LR4-0301-00-CA)
- Whisker Litter-Robot 4 product page with published specs Source for Whisker Litter-Robot 4 with Step and Fence, Black (LR4-0301-00-CA)
- Whisker Litter-Robot 4 Frequently Asked Questions support article Source for Whisker Litter-Robot 4 with Step and Fence, Black (LR4-0301-00-CA)
Primary sources checked .