Quote Originally Posted by Melalvai View Post
Isn't Terro just sugar water with boric acid? That's not harmless but it's not terrible. Plus you could easily position things so the dog can't get to it (but the ants can).
I would view Terro as "spot killing" without excess. Unlike a spray (that has overspray), the ant comes to Terro and then brings back a minor residue that kills others in the nest. I think that is an environmentally sensitive method and the method of distribution through the traps mitigates the risk to pets somewhat.

Once, at my parents house, I had to keep a fresh trap in one place for about 4 months before the ants stopped coming....For all I know, I may have killed half the ants in southern indiana.