How we rate
Every product on Best This goes through the same process: we decide what matters for a category before looking at any products, check claims against independent sources where they exist, score the results, and audit our own scores for obvious bias. This page is the method, including the parts where the honest answer is that we do not know.
Buyer Score
The Buyer Score measures how a product is working out in the real world. It is built from public review volume and rating, relative price in the category, and whether recent reviews point to a quality drop. It is not a lab test. It tells you how owners feel, not whether a claim is true.
Standards Score
Each category page starts with a short set of graded topics, written for that product type and fixed before a single product is scored. Setting the criteria in advance makes it harder to bend a standard after we know who would win. Four topics appear in every set:
- Health and safety impact in normal use
- Environmental cost to manufacture, operate, and dispose of
- Claim honesty: whether the label matches what is in the box
- Independent verification outside the manufacturer
Scores run from 0 to 100 on every topic. Missing manufacturer data is marked as estimated, not invented as a perfect score. The overall rank you see on a list is a blend of Buyer Score and Standards Score, shown as a 0–10 number on each card.
Advertising disclosure
We may earn a commission if you click a Check Price link and make a purchase. Rankings are not sold. If a product cannot be scored because we lack evidence, it does not appear.