Vern,

It is Drione. Used plenty of the stuff.

Years ago, we used to take a duster machine and fill it with about 5lbs. of insecticidal dust and stick that machine in the crawlspace and let her rip.

We wait till we saw dust blowing out from the crawlspace vents, the place looked like it was on fire.

Now as a home inspector, you can bet your arse I wear a respirator on all pier and beams. I've started bidding so high on a pier and beam inspections cause I could really care less if I do one of those or not.

rick