Jeff from Fouke, Ar writes
How much do you mix per gallon for best results?
Bifen IT is a good choice for bagworm control. The product label recommends mixing at the rate of 1 oz per 1000 sq ft in approximately 1 gallon of water. Bifen XTS is an oil-based insecticide that is only for outdoor use, while Bifen IT is water-based and has a broader label. However, it is important to start control methods before infestation occurs. Once the bagworms have matured and have formed the "bag" most chemical control methods will no longer work. Once the bags have formed, you can manually control bagworms by simply plucking them off of the infested trees and dropping them into a bucket of soapy water or squishing them.
Answer last updated on: 07/13/2015
