This is simular to the post regarding applying with a ride-on. I've always wondered is any effectiveness is lost due to evaporation when a person uses a low volume sprayer such as a Permagreen ride-on. On warm/windy days, I have watched my guys spray with our PG units, and it looks like much of the mist doesn't hit the ground. Is it only the carrier (water) that might evaporate, or could some of the herbicide also evaporate?? Thanks.