Yikes! I have used the Terro traps to kill ant colonies as well. They do take some time to be effective, as least in my circumstance. That was with a cymbidium that couldn't be moved indoors. I had a "minor" problem with a dendrobium that I took care of by immersing the plant in water. It forced the ants to the top of the plant. At that point, they are vulnerable to anything you throw at them. I can't remember what I used to kill them.
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