Review Methodology

Sources. For every product we use three kinds of evidence: official documentation and specifications, hands-on experience when we genuinely have it, and the long tail of owner feedback across forums, retailers and communities.

Criteria. Each category has its own weights — for vacuums it's suction, filtration, floor range, ergonomics and maintenance; for cleaning chemistry it's efficacy, safety and surface fit. The criteria are named on each review.

What we never do. We never invent measurements, prices, star ratings or original lab results. If an attribute is a marketing claim without corroboration, we label it as such.

Testing. When we say “we tested,” a member of the team physically used the product and we describe what happened. Otherwise we say so openly — most reviews on this site are research-based, and every one says which it is.