[snuffy smiff]

Diatomaceous earth works great for ants (need a lot of patience but you can kill whole hives of them) and dog type fleas.

I'm thinking I need about two dump truck loads-any idea where I might find that much?

[OKSooner]

You can get D.E. at your local friendly agricultural supply store, or nursery/equipment company where fertilizers, pesticides, etc, are sold.

Also the organic people are into it, but be not deceived, just because it's "organic" doesn't mean it won't hurt you.

Dress to cover up, use eye protection and a mask. Don't inhale it.

Spread it out where you intend to use it in such a way that you can come back later and pick it up with a shop vac, preferably one with a HEPA filter, and use a mask.