Boracare is only labeled to be used directly on wood so this should not be used on a concrete wall or paver. 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, we 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.
Yes, you can use Boracare on any raw wood. Boracare protects wood from wood-infesting insects like termites, carpenter ants, and wood-boring beetles, plus wood decay fungus. You can apply Boracare at a 5:1 dilution rate with water for preventative wood treatment. Apply with a sprayer, paint brush, or roller. When treating exterior wood such as a fence, you should apply a water sealant after the Boracare has tried completely.
The advantage of doing a tenting treatment is that it will kill all the insects in the home at the time of treatment. Since drywood termites have one colony all in one place, this would eliminate all colonies present without necessarily having to locate all of them. Obviously cost and time can be a concern with this type of treatment. Plus, tenting does not provide any kind of prevention, so a Boracare treatment on raw wood is a great idea for prevention. If you are going to treat yourself, then you would use signs like frass and kickout holes to locate where the live termites are in the structure, and you would spot treat each of those areas. I recommend using a foam termiticide such as FUSE Foam to spot treat live termite activity in the structure. It is not recommend to spot treat only using Boracare. Boracare is a unique product in that it absorbs into the wood and stays present for the life of the wood, so it is really one of the only things you can do for prevention of drywood termites.
We have more tips in our Drywood Termite Treatment Guide here.
Foaming would definitely be the best option for your scenario. You mix Bora-Care as you normally would at a 1:1 ratio (one gallon of bora-care with one gallon of water). After you mix it, pour the solution in the foamer and add Pro-Foam foaming solution. You want a high expansion foam so you should mix 7 to 10 oz. of Pro-Foam per gallon of bora-care solution that you make. Then close the lid, shake the foamer, and pump it like you would any other hand pump sprayer. The Chapin Poly Foamer comes with a coiled hose and ¼ inch tapered nozzle. You can get the Chapin poly foamer in a 1 gallon model or a 2 gallon model.
Here are links for you to see:
Two gallon poly foamer: http://www.domyownpestcontrol.com/chapin-poly-foamer-gallon-2659-p-292.html
One gallon poly foamer: http://www.domyownpestcontrol.com/chapin-poly-foamer-gallon-2658-p-495.html
Profoam foaming agent: www.domyownpestcontrol.com/profoam-foaming-concentrate-p-307.html
Hope this helps. Please let me know if you have any further questions.
Bora-Care can be applied to raw, natural wood and penetrate 4 inches into the wood surfaces. It is recommended to apply to all sides of the wood for the best results. You will mix it at a 1:1 ratio for active drywood termites and it should be diluted with hot water in a separate container and mixed completely first. After it is mixed properly, you can add it to your spray tank for application. Please refer to the link below for the application chart based on dimensions.
Bora-Care can take up to 90 days to completely penetrate through all of the wood to where all of the termites are. Bora-Care does not kill the termites by touch. The termites walking on the wood are not effected. Bora-Care kills the termites by ingestion. After the Bora-Care has moved through the wood, the termites that are still in the wood will die when they continue to eat and ingest the Bora-Care with the wood. You should treat all exposed sides of the wood that you can get to. One treatment is normally enough unless the wood you are treating is more than 8 inches thick. The termites will not spread easily to other areas so that is not a concern.
Bora-Care is only labeled for use on raw, untreated wood. For an effective treatment we would recommend you strip the wood of any paint.
Any untreated or unstained wood, including plywood, would benefit from an application of Boracare to help protect it from wood infesting pests, fungi and dry rot. If you do have an active infestation of pests in the wood Boracare would be the best treatment for that as well before you stain. When treating wood that may be exposed to rainfall, be sure to apply a water sealant after the Boracare application has dried.
Unfortunately, Boracare is not labeled to be used as a perimeter treatment on concrete. It is lableled to be used on cellulosic materials including wood, plywood, particle board, oriented strand board, cardboard, and wood composite structural componets only.