Nathan writes
No, a trench is what you should do. Drilling a hole every six inches does not ensure that you get complete coverage around your foundation. There will be gaps in the treatment, and you do not want gaps in the treatment at all. The goal should be a non stop barrier with no gaps around your home. The only way to do this is to trench at least the areas that you can, which is where the ground comes up to the house.
Answer last updated on: 04/01/2011
