Bests & Worsts Reviews from Amazon

This duster pretty much does exactly what it was designed to do. For me, it delivered a fine mist of Pyrethrum dust into a small crevice in the outside structure built around my gas fireplace insert. I had a huge colony of yellowjackets which had taken up residence, and there was no better way for me to deliver an insecticide. I will make one note here. The duster really works well when the yellow cap and outlet are held on the bottom. But if you flip it over, it's not going to spray any of the powdered solids in the container. At best, you will get a small shot of the particles which were small enough to be suspended in the airspace. This is just simple physics and gravity. So definitely hold it with the applicator on the bottom. Also, the applicator extension included with this duster is just about 4 inches long. I imagine for most applications, this is sufficient, however if you need to get into tight places or there are other structures blocking your access to the point where you need place the delivery nozzle, this extension is just not long enough. I solved this problem by going to the hardware store and buying 2 ft of 3/8" OD polyethylene tubing at about 24 cents a foot. See the pic. By using this tubing instead of the included applicator extension, I was able to easily dispense the dust exactly where I needed, and still be able to hold the duster upright with the applicator on the bottom. All in all, this is an great product, well worth the small price. And with a simple addition, this becomes an excellent solution to a very annoying problem.