Don’t take our word for it. Here’s every fact on this site, with its evidence grade, its caveats, and a link to the source, so you can check us.
We start you on the strong ones: findings that have been replicated or come from one large, well-controlled study. Moderate and weak facts are here too, labeled for what they are. Use “Link to this fact” to share a single card.
Laws and loopholes / Government agency
No US program requires VOC emission testing of cleaning products: EPA Safer Choice certifies fragrance-free products but, per the authors, does not require or disclose emission testing, and the chamber data show hundreds of emitted chemicals missing from labels and industry databases.
Weak evidence.
Caveats
EWG-authored (advocacy nonprofit that ranks cleaners and licenses EWG VERIFIED to cleaner makers); Skyline Foundation grant; unblinded; The authors' characterization of Safer Choice (2016 reference); not independently checked against current program rules.
Laws and loopholes / Other evidence
EWG calls the lack of public safety information on chemicals in everyday products 'a major failing of the nation's outdated chemical policy' and says manufacturers and government 'largely leave consumers in the dark' about cleaning-product contents.
Weak evidence: Advocacy-organization position in 2012, with no data or citation in this piece.
Source: Andrews, EWG, 2012 (web page) Link to this fact
Information, not medical advice. See also: myths we won’t tell you.