Identify and Remove the bagworms from trees
First of all, monitor all the plants and trees and look for carrot-shaped bags on them. Bagworms grow in bags and can damage different kinds of trees.
The bag can be easily identified as they hang from the limbs of trees and look like Christmas ornaments.
You need to remove the bags from the trees at the right time to make sure they do not cause any damages.
An effective way to get rid of them is to remove the bag and throw it in a bucket of soapy water so that all the worms are killed.
Another way would be to remove and place the bags in plastic sheet and dispose them in trash.
Another effective way is to use Biorational pesticides on trees regularly even if you do not have bagworms. This spray is extremely effective as it gets rid of all the bagworms and does not affect any other insects which may have been good for the plants.
Another way to control the bagworms is to use dinotefuran on the soil around the trees. The soil will absorb the chemical and whenever the worms ingest the leaves at any point, they will die instantly. This is a long process but one of the most effective ones.