Joe from Pa. writes
When concrete surrounds a home you must use a hammer drill to drill through the slab and into the soil right up against the home. The holes should not be further than 12" apart and you can use a sprayer that is set on pin stream or you can use funnels and pour the solution into the holes with a bucket. The usage rate will stay the same so you should apply 4 gallons of the solution to every 10 linear feet. (usually works out to be about 1/2 gallon of solution per hole).
Answer last updated on: 03/31/2013