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.
1 Range from less than $1/square foot for do-it-yourself panels from a building supply store to $2-$7 or more if installed by a contractor. 2  For an 1,800-square-foot exterior (50' long, 40' wide and 10' tall'), that's $3,600 to $12,600 and up for professionally hung vinyl.or vinyl siding with a 1/4 in foam insulation with materials a fair price is $350.00 per square. Everyone gets caught up in the mil of the siding and worries about that, but remember we are talking about fractions of a millimeter.