Paul, I was in contact with a rep. from I believe, Amvet Pharm. that mentioned a product that they were testing. It basically was a gelled form of Formic Acid that was encased in plastic pouches with lasered holes in the plastic. The idea being a controlled release of Formic vapors over an extended period and a much safer application method. They are a Canadian company and I was curious if you had heard of any results from them. Brian Tassey Alta Apiaries Atwater, CA 95301