Dave from Staples, Mn writes
I spray using a back pack gas operated sprayer (Stihl 450SR). I use Demon Max to control mosquitos but want to have the option for adding a product to it for controlling biting deer flies and horseflies
Demon Max is labeled for flies and there is not another insecticide we would recommend mixing with it. ExciteR could be added to it to give a faster knockdown during initial application though. Horseflies and many other species of biting flies tend to develop on the edge of bodies of water and since they are strong fliers these breeding areas can be near or far which makes finding the source next to impossible. Using Demon Max will give some relief but since these flies can fly over treated areas it can be tough to get complete control. Relief should be on the way soon, however as horsefly season is usually only 3-6 weeks long.
Answer last updated on: 07/29/2016
