PetSafe ScoopFree Clumping Self-Cleaning Litter Box (ZAL00-17761) 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 Clumping Self-Cleaning Litter Box (ZAL00-17761)
Cat owners who want to keep using their own clumping litter
This ScoopFree rakes your own clumping litter into a covered waste bin ten minutes after your cat leaves, with no disposable trays to buy. The litter tray, waste bin and bin cover are dishwasher safe and the rake lifts out on two thumbscrews for hand washing. PetSafe's guide says to leave it unplugged and scoop by hand until a kitten is at least six months old.
Published specifications
- Guide: models PAL00-17762 and ZAL00-17761; maker page gives 21.1 x 10.7 x 29.0 in, plug-in power
- Guide: rake runs 10 minutes after the cat leaves; timer resets if the cat returns; one rake button
- Guide: most litter types, with clumping clay or ScoopFree Premium Crystal recommended; keep between the min and max fill lines
- Guide: waste bin can run unlined or with an 8-to-10-gallon trash bag that must not foul the cover or rake
- Guide: litter tray, waste bin and bin cover are dishwasher safe; the rake is not and is hand-washed
- Guide and maker page: 1-year limited warranty; hood sold separately as an accessory bundle
Strengths
- Takes your cat's existing clumping litter, with no proprietary tray to keep buying
- Litter tray, waste bin and bin cover go in the dishwasher, and the rake releases on two quarter-turn thumbscrews
- Published light codes and a manual rake button mean it works without an app or account
Caveats
- Leave it unplugged and scoop by hand until a kitten is at least six months old, per PetSafe's own guide
- The quick start guide carries no cat weight limit; the full safety instructions sit in a separate customer care guide
- No hood, no app and no usage tracking on this model; the hood is a separate purchase
Read the full PetSafe ScoopFree Clumping Self-Cleaning Litter Box (ZAL00-17761) guide
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 Clumping Self-Cleaning Litter Box (ZAL00-17761) if your situation matches: Cat owners who want to keep using their own clumping litter. Its main caveat: Leave it unplugged and scoop by hand until a kitten is at least six months old, per PetSafe's own guide.
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 Clumping quick start guide SFE400-2587/1, models PAL00-17762 and ZAL00-17761 Source for PetSafe ScoopFree Clumping Self-Cleaning Litter Box (ZAL00-17761)
- PetSafe product page for the ScoopFree Clumping Self-Cleaning Litter Box, item model ZAL00-17761 Source for PetSafe ScoopFree Clumping Self-Cleaning Litter Box (ZAL00-17761)
- 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 .