What happens next?

How to get rid of bagworms
Begin looking for bagworms during the winter or early spring.
Bagworm egg sacks are brown and one and a half to two inches (3.8 to 5 cm) long. They are covered with dead needles, so they appear more noticeable in contrast to the green deciduous needles at this time.

Possible answers: (a). Bagworms can be found in open-wound bags, at natural supply stores or online. Bagworms like to live near ammonia, nitrite, and sulfuric sulphate because these chemicals help keep the worms from entering your system.; (b). Bagworm sacks can be very hard to find because they look like pine cones. Look through your pinecones to find variations that may be bagworms.; (c). To check for bagworms, simply place your finger into the ear canal and listen for a very low-pitched humming sound. If you are using a bagworm egg sack, place the sharp end in the ear canal.; (d). They are non-porous and create little spikes in the wool. However, during the winter they are much harder to get rid of because of the fact that they have a hard time survival with the shifting temperature (never having any sun).;
(b).