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Q&A Home

Brian writes,

Does it matter the Diameter of drill hole - 3/8 or 1/2 inch?

Your (great) site mentions to use the 1/2 inch diameter drill hole (by at least 18 inches deep) for treating exterior slabs with Termidor. However, others mention that a 3/8 inch diameter should be used. Does it matter?


The diameter of the holes does not matter with either size. Some prefer the 3/8 and some prefer 1/2 inch holes. Both will do the job so long as you are putting the correct amount of product into each hole. 

Answer last updated on: 09/13/2014

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