Memorial Day Weekend means hitting the road for many of us – vacations, camping, or even moving to a new home. But watch out for an invasive pest that also enjoys new destinations—the destructive gypsy moth. Gypsy moth caterpillars can defoliate, weaken and kill more than 300 different species of trees and shrubs. Since 1970, more than 83 million acres have been defoliated by the gypsy moth in the U.S.