Control by Bagworms By Handpicking
The secret to bagworm control is to spot the worms early in their development. Once the worms have taken refuge in their bags, they are harder to deal with. It is easy to miss the first phase of the bagworm attack. You may not notice the bags until well into the summer. Then the simplest method of control is to handpick the bags containing the pests.

This a real challenge if the trees are large and the bags are far above your head. You may need to use pole power pruners to clip off the ends of branches where bagworms are hanging. Destroy the pests by putting them in a plastic bag and discarding them in the trash. Placing the bag/insect between the cement and the bottom of your shoe is also a very effective bagworm eliminator.