Aerial war on gypsy moth
State conservation helicopters spray 30 000 acres across Sullivan Orange Rockland and Ulster counties at dawn. Planes fly 50 to 75 feet in near treetop level reaching eastern Sullivan and western Orange while Rockland is finished. The Levin insecticide, safer for fish and animals than chlorinated hydrocarbons, aims at leaf eating insects after a 1959 DDT ban due to bird and wildlife harm.