Fred from Shreveport, La writes,
Drilling around house slab
I want to do preventive termite around slab of my small home--no garage--just a rectangle slab. I do NOT want to dig a trench all around home & pour in termidor. I have hi-pressure sprayer to mix termidor in. Do I drill the holes with these bits parallel to slab every 10-12"? or do I drill them downward in ground at an angle--that is 18" down into ground rather than parallel/under slab)? Will buy bits & termidor from you.
We understand that you do not want to dig a trench, but the trench is the preferred method and when wanting to only drill holes, which is called rodding, you run the risk of leaving gaps of untreated soil. Of course it is your choice, but it is important to understand that the holes are not as complete of a treatment as have a non-stop trench around the house. That being said, you should drill at an angle towards the house, starting about 3 to 4 inches off of the house and every 10 to 12 inches apart. The closer your drill holes are together of course the less of a chance you will have of there being untreated soil between the drill holes. Please see our Barrier and Soil Termite Treatment Arcticle.
Answer last updated on: 04/28/2012