Your review: We use two large evaporative humidifiers. This treatment did keep the evaporative elements from growing anything. No unusual odors either.
Pros: No mold or mildew dared grow with this product in the water. It seemed that the calcium and iron build-up from our water was less than with other products. We expect that we can use the evaporator elements for two seasons.
Cons: The warning label is enough to scare the wits out of the employees! The solution is effective, but most who changed or refilled the reservoirs wore gloves and masks. Not a bad idea, but it made some question the solutions ability to vaporize along with the water. No one has so much as sneezed though and the MDS Sheet says that we are safe.