These are the directions for use and the MSDS specifications sheet. All moisture problems should be corrected first. It is quite possible that, even if you have carpenter ants, you might never need to use this product. Just as it says, it is NOT good for carpenter ants, but just about all the other inside ants are taken care of with these buttons. Your success always depends on a multitude of factors, so sometime you might need a REAL exterminator.
Drione dust is pyrethrum and silica gel.
They also use a synergist, piperonyl butoxide, to make the pyrethrum more effective. The silica gel acts as a desiccant which kills insects by drying them out. Extension and internal parts are brass. I find the extension so versatile, and I use it so often, I have included it with the duster. Also included, is the handy plastic funnel you can use to load it.