Thanks. I’ll check it out. Will it be expensive to cover most of an acre? (Expensive > $300)
Bulk rates are listed here: http://www.dirtworks.net/Diatomaceous-Earth.html
You might contact Dirtworks directly about how to treat your acre of woods. I’d be inclined to powder the brushy areas closest to your home and where Sophie tends to wander, expanding the radius over time, as you’re able. Could be an ongoing endeavor as the stuff must wash away or disappear in time but the application is easy and the Killer Earth is pretty cheap.