removing bagworm by hand

arborvitae bag bagworm blue branch bug bugs care caterpillar caterpillars cedar chemical closeup colorado control defoliation entomology environment ephemeraeformis garden gardening green hand hanging health horizontal insect insecticide insecticides july june juniper landscape larva natural nature needles non nuisance pest pesticide pick pine plant removal sac shrub shrubs spruce thyridopteryx tree trees twig white worm worms