Spray affected plants with a ready-to-use systemic insecticide that contains acephate, imidacloprid or dinotefuran. Systemic formulas do not kill bagworms directly. The active ingredient is absorbed into plant leaves and needles, and then circulated throughout the plant. The insects die when they feed on plant parts and plant sap.
Depending on the size of your garage, insulating the walls with batts of R-13 will typically run you about $400, the ceiling $600, and the garage door will cost about $600 if you do it right (See image to the left). You can use the pink Styrofoam stuff from Home Depot, but that will only insulate your door to about R-6.
Youâll save up to 70% over the cost of a pro. Check to see if you can rent an insulation blower from your local home improvement center or tool rental store. But if the job is more complicated than that, definitely hire a pro to make the installation worthwhile in terms of energy savings. Cost: 30 cents per cubic foot.