"William W. Plummer" wrote in message
http://www.rugdoctor.com/Rent/MSDS/All_Steam.pdf
That reference is content-free. Sections 10, 11 and 12 are empty. These
deal with toxicology, environmental hazards and disposal. But it does say
to wear nitrile gloves.
The instructions apply to the full concentrate. You probably use bleach in
some of your laundry with no harm, but you'd not want to spill the full
strength on your hands. The same would apply to most any cleaning solution.