We recommend doing a complete Termite Barrier Treatment if you are seeing signs of termite activity. Using Termidor SC will give you a 10 year barrier treatment against subterreanean termites. Termidor SC is applied in a trench and in drilled holes directly around all sides of the structure. It will take approx. 90 days to kill any active colonies depending on their size. You can apply Termidor Foam in the wall voids in the sheet rock to spot treat activity. Where there is concrete you will need to drill directly into the slab. This includes patios and garages. Please read the article below for more information on treating termites.
To treat areas with Termidor SC that have a soil to foundation interruption such as a patio, you would drill holes in the patio using a ½ diameter concrete drill bit that is 18-24 inches long. The holes will be drilled every 12 inches and filled at a rate of 4 gallons of finished solution every 10 feet, just like you were doing in the trench.
Termidor SC is only labeled to be used around a structure and cannot be sprayed further than 6 inches from it, in California. Arilon Insecticide can be used around the perimeter of the home and you could expand the band around the perimeter, for example: you can spray 3 feet up on the foundation and 7 feet out. The active can also be transferred from one ant to another and can be used for direct mound treatments if necessary, as well as surfaces commonly used by ants for foraging such as outdoor edges/frames of windows, doors, utility penetrations, roof lines or eaves, and other structural edges may also be treated. In addition to exterior structural elements, outdoor nesting sites such as refuse collection areas, flower/mulch beds, adjacent tree holes, surrounding turf areas, crawl spaces, or other nest/ foraging sites, and foraging trails can be treated.
The answer to this question is also in our How To Do A Termite Treatment Article. You will want to use the Termidor product. For your concrete areas against the home, you will need to get the termiticide underneath the concrete against the foundation. To do this you will need a hammer drill with a 1/2" x 18" drill bit. You drill holes throughout the concrete about 3-4 inches away from the wall or foundation, and about every 10"-12" apart. Once the holes are drilled, you fill at the same rate you did the trench, 4 gallons per 10 feet. To fill these I would recommend using the one gallon sprayer on a "pin stream" setting so you can force the liquid down the hole and not splash it everywhere. You can also use a funnel and pour the termiticide down the holes. It is difficult to get 4 gallons per 10 feet in the holes, so it is important that you use a long drill bit, at least 18" long so you can bore out enough dirt to hold the termiticide. Once the holes are filled all you need to do is patch them with a concrete patch filler you can buy at Home Depot or you can use our Trebor plugs that will close the hole with no concrete mess.
As for your areas with rock over dirt, again - you need to get the termiticide product down into the soil to be most effective. We recommend digging a 6in x 6in trench to pour the solution into the ground.
