We have a company that does this work in some resorts in the Dominican Republic. While yes, it's standard procedure, and yes the risks are low, you still shouldn't spray it ON people. Low risk doesn't mean no risk. If you are going to get it on your skin, that's not the low risk situation the manager is referring to. After all, if it was harmless, the technician applying the treatment wouldn't be wearing gloves and a gas mask.