I believe that is where the cancer cases are coming from. It is banned in NY and much of UK and restricted in canada. The EPA has classed it as “Likely to be Carcinogenic to Humans”

http://www.pesticideinfo.org/Detail_...DIST_NR=073617

The suggestion is to avoid inhalation and through washing after application. It is a toxin and needs to be treated as such. Caution is needed with any pesticide. It can be used safely only if the user understands the risks and personal protection needed.