I have to get my huge spruce tree in the back yard sprayed with B.T. PRONTO!! I found spruce bud worm hatching on the tips last night, right before sundown. My hose applicator won't reach the top, so I emailed my tree care guy last night and he will spray B.T. on it this afternoon, even though it is Sunday. If they killed that tree, my back yard would be bare and ugly and lose a lot of privacy, not to mention a beautiful piece of bird habitat and all the other wonderful things about a mature spruce tree. The trees in our area are being attacked by both spruce bud worm and pine beetle. There is a campaign by the city and university campus to try to save as many as possible with B.T. and beetle pheromones and removing host trees and infested firewood.