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Scott writes,

How does Termidor work outside for ants with wood siding and decking?

I recently found carpenter ants in a void in one of my walls. I know they are getting in via damaged wood on the outside of my house (which will be fixed by the end of the month). My home has a cement foundation but a wooden deck that runs right up to the house, which also has wood siding. I plan to spray Termidor on the wood walls and decking outside to hopefully kill the ants inside as well as outside. How long can I expect Termidor to remain on the wood if it is not made to bond to wood? And should I spot check parts of my inside of my house to make sure I get the ones trapped in from the repairs.


You can expect Termidor SC to last for at most 6 weeks when it is applied as directed on the product label for a carpenter ant treatment. Six weeks is all most ant infestations will require for elimination with Termidor SC. You should spot check several weeks after the Termidor SC application to make sure the ants are gone.

Answer last updated on: 07/12/2011

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