Thanks for the advice pdq, now I have a couple more questions:

First of all, I've heard that Chlordane was a very effective preventive product but that it was taken off the market 'due to misuse' . . . anyone know about this?

Secondly, I'm going to have to remove an old apricot tree that full of termites. What should I do to the area around it? Should I use something to kill the termites as I cut into the branches, trunk, etc.? (I already cut into a couple of branches, and it's full of the damn things).

Thanks, again.