This works very well in self-guiding applications of dust without wasting product. I thought about the electric B&G model but that unit tethers you to a cord that can snag and costs more than double the cost this unit. This unit is light and allows good freedom of movement through attic trusses and beams. Unit comes with an array of applicator tips and extension rods for close and longer throw applications. It stores plenty of product avoiding the delay associated with refills. This is all the DIYer like me needs to thoroughly dust an attic in a single-family residence. Easy to return unused product to original container and clean and it stores compactly after use. It appears to be well made and sturdy. Note that additional applicator tips are stored inside the push rod and are accessed through by removing a pressure fitted (not threaded) PVC cap on the end of push rod. That cap can be very tight and difficult to remove. Customer service on this issue was excellent.

The duster does not perform well at throwing the granules. I bought it for that purpose. The granules barely come out of it and you have to constantly shake the duster for that small amount to come out. Very disappointed after spending 115.00. DMOPC was not knowledgeable fo the product either.