Product review (5 stars): Works
I am using it in a wick type of humidifier. Use to have problems with a moldy smell from the humdifier and I could see black stuff growing on the wicks. Used it for the whole winter 2010-11 and found it completely eliminated the smell. In addition it kept the wicks from getting the black discoloration. I use it with RO water and the wicks will last the whole winter. Previously I would have to change the wicks monthly during the winter months due to a combination of the hard water deposits from the tap water and the mold. Installed a RO water filtration system(another story)and started using this. So this has saved me the cost of new wicks in addition to getting rid of the smell. It also reduces the slime/algae that forms in the tank where the wicks sit. The label says not for use in heating and atomizing humidifiers. As far as the active compound it is a widely used disinfectant in a large number of household products. Of course mold itself is also dangerous. The dosage is very low just a capful per gallon but that seems to do the trick.