All sprays drift, but pesticide users can reduce the impact of drift by using lower-risk pesticides. Dr. Alan Felsot, environmental toxicologist with Washington State University, said sprays are made up of particles of pesticides, and how far they move depends on several factors, including the type of spray, the size of the particles, and air movement. “What can we do to prevent drift?” he asked. “It’s striving to minimize the effect of the inevitable. We can’t stop it, but we can minimize the potential exposure level to a level of reasonable certainty of no harm.” About 25 percent of complaints […]