This option involves treating soil around the entire structure to provide a zone that will kill any termites that enter the treated soil. Depending on the termite chemical (termiticide) used, the chemical soil barrier (treated zone) can also affect / eliminate the entire termite colony.
Treating open soil and garden areas involves a process called Trench, Treat, Backfill, (digging up the soil down to the footings and around piers/stumps, treating the soil and backfilling).
Treating soil under pavers will require the pavers to be lifted.
Treating soil under concrete and tiles can be performed using 2 different methods:
- Drill & Inject ;or
- Cutting and Re-capping
Drill and Inject.:
This method involves drilling holes every 150mm-200mm apart through the concrete/tiles and injecting a quantity of termiticide in each hole. The holes are resealed. This method is not as effective as cutting and re-capping since the soil being treated in unseen.
Cutting and Re-Capping:
This method involves cutting the concrete along the perimeter of the structure and then treating the soil using the Trench, Treat, Backfill method. The concrete can be re-capped using new concrete or pavers (to make it easier for future treatments).
If the soil is not of a good enough quality to hold the termiticide, soil replacement may be necessary.
This option is designed to provide a much higher level of protection against future termite attack.