Method / Research protocol
How we research: catalog data first, owner reports second, no pretend bench tests
Research updated November 10, 2026 / Clean Litter Lab notes
Clean Litter Lab exists because automatic litter box advice on the open web is mostly recycled marketing copy. Our method is deliberately boring: verify everything that can be verified from records, paraphrase what owners actually experience, and say plainly what we have not done.
We do not run a physical test bench and we never write as if we do. There are no invented weeks of testing, no fabricated photos of units in our homes, and no star ratings assigned by us. What follows is the exact protocol each product on this site went through.
The protocol, step by step
- 1Live catalog pullEach product is pulled from the Amazon catalog through the Creators API under our own Associates tag. If the ASIN does not return a live response, the product does not exist for this site. That is how the Litter-Robot 3 Connect and the CATLINK Scooper Luxury Pro were dropped from early drafts: both survive in old roundups, neither has a live box listing to verify.
- 2Image verificationThe primary catalog image for every product is downloaded and checked two ways: the file must be a real image well over placeholder size, and a human looks at it to confirm it shows the exact model and variant named, not a sibling product. All 13 products in the current catalog passed both checks.
- 3Spec extractionDimensions, weights, capacities and sensor claims are taken from the catalog record and the manufacturer listing text, and cross-read against the brand's own documentation where the two disagree. When a number cannot be sourced, the page says so instead of estimating it.
- 4Owner report analysisWe read public owner reviews, owner forums and long-term update posts for each model, then compress them into recurring themes: the praise that repeats after the honeymoon month, and the faults that repeat often enough to be a pattern rather than an anecdote. Themes are paraphrased, never quoted as if they were our own testing, and never turned into invented percentages.
- 5Safety filterFinally, every product is run against the safety standard published on this site. A product that cannot document how it knows the cat is clear before it moves does not get recommended, however good its other numbers look. One current catalog product is filtered out this way, and we name it and show the reasoning.
Lab note
What we do not do
We do not accept sponsored placements, free units in exchange for coverage, or payment to rank a product higher. We do not copy manufacturer star averages into a score of our own. And we do not publish prices as facts: the price on every page is labelled with the date it was read from the catalog, because Amazon prices move and the listing is the final word.
How money works here
Product links carry our Amazon Associates tag, thepickledger-20, and are marked rel sponsored. If you buy through one, Amazon pays us a commission that does not change your price. That is the entire business model, and it is also why the catalog is Amazon-only: a product we cannot link and verify in the same place is a product we cannot keep honest records on.
The full legal wording lives on the affiliate disclosure page. Corrections are handled in the open on the contact page: if a spec changes or a listing is replaced, the page is updated and the date on it moves.
Two specimens from the current verified catalog
Spotted something out of date? The lab corrects the record in the open - see the contact and corrections page.