Great topic. We call it PPE (personal protective equipment). This is one of the three “elephants in the living room” of our industry which too many operators are turning a blind eye to.
All those softwashers who spray without a mask, who drown their SH in synthetic fragrance thinking that it somehow helps, and especially those who add their own “proprietary” mix of biocides to the brew are kidding themselves if they really think the risk to health is negligible. Chronic exposure is a bitch.
Here’s an eye-opener for the skeptical: spend a season softwashing without a mask, then spend a couple hundred bucks on a Toxic Non-Metal Chemical Profile test. It’s a pee test, you mail it in and they tell you all kinds of info about how your liver is handling. GPL4U.com.
We always wear masks, I like the 3M vapor cartridges. We also explain to the homeowner WHY we mask up, rather than BS-ing them. To date, their response has always been 100% positive and appreciative.