Carpenter Ants burrowing into trunk of Weeping Peach

Webberville, MI(Zone 5b)

I have acquired the job of renovating a friends veterinary clinic's garden. In one of the gardens the focal is a weeping peach tree. Some branches look dead and it needed a thorough pruning, however, upon further inspection, I found carpenter ants had made a small hole (size of the ant itself) into the trunk and many were headed in. I sprayed the hole with the only thing I had (wasp and hornet killer) and am headed back today. I have Diazanon, Bayer Insecticide and Sevin dust. Any suggestions? How can I tell if the ants have done too much damage for the tree to be saved? It is still producing fruit and leaves.

Any suggestion, tips and advice are GREATLY APPRECIATED!!

Norwalk, IA(Zone 5b)

Spectracide makes a great ant bait that works wonders on carpenter ants. Lowes etc carry it.Comes as a granular bait that they carry into the nest and all of them die in a short time.Safer than sprays and get all the way into the queen to kill the whole nest.Follow ALL directions on the label...ALWAYS!! :-)

Kyle :-)

Webberville, MI(Zone 5b)

Are there signs to watch for that show irreversible damage?

Bluffton, SC(Zone 9a)

I would go sevin dust.

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