Controlling Bagworms vs. Fall Webworms on Tall Trees

Peachtree City, GA homeowner has "bagworms" on tall ash tree, 20-30 ft up, unreachable for spraying.

True bagworms: Spindle-shaped silk bags with plant debris; caterpillars inside. Prefer arborvitae/cedar but attack many trees.
Fall webworms: Silken webs over foliage tips in late summer/fall. Cyclic populations. Don't kill mature trees.

Description suggests fall webworms (webs on foliage, not individual bags).

Open webs with water stream to admit predators.
Prune/destroy accessible tents.
Trunk spray Orthene: Caterpillars crawl down to pupate—killed on contact.
Bt (Bacillus thuringiensis) for small larvae; Diazinon/Sevin/Orthene for larger.

Foliar spraying large trees harms beneficials more than pests. Don't burn tents.

Trees: Ground-Level Tactics for High Webworms in Pecan and Sycamore; Bagworm Control on Pecan: Tanglefoot and Orthene; Bagworms on Evergreens: How to Confirm They're Dead After Spraying; Bagworm Control on Blue Spruce: Timing and Treatment Options; Pecan Webworms: Trunk Treatment for Tall Trees; Boosting Catalpa Worm Populations and Managing Ants; Managing Mimosa Webworms in Honeylocust; Borers in Dying Willow: Wire Probing and Systemic Insecticide; Growing Catalpa Trees for Fishing Worms; Worms in Plum Tree Roots: Earthworms vs. Borers

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