Inside the crawl space you would need to trench around any piers that hold up the home but the outside trench would be all that is required for the actual foundation if you are using Termidor. The Termidor will last for 10 years to protect your home. Please take a moment to look thru our pest control guide for termite treatment.
If you are doing a trench application for termites and there is concrete surrounding the foundation, then holes will need to be drilled all around the home to properly apply the Termidor SC. The holes need to be drilled every 10-12 inches apart, 18 inches in depth to reach the soil beneath the concrete and anywhere from 3/8 inch – ½ inch in diameter. Please refer to our Termite Treatment Guide for a more in depth step by step on how to treat your home for subterranean termites.
We recommend that you treat the inside and the outside of the home with one of our Roach Control Kits. They include an insecticide, an insect growth regulator (IGR) and a roach bait gel. Termidor SC can be applied only on the outside of the home once every six months (1 ft up and 1 ft out directly around the structure). Below are some great articles with information on the treatment for roaches that you might find extremely helpful. Please read the product labels for each product for specific application instructions. If you need additional advice, please contact us at 866.581.7378.
You will need to determine what kind of termite you have for us to direct you on the best treatment method. Bora-Care is usually the preferred choice if you are dealing with Drywood Termites and if most of the wood is exposed and it is raw wood you are treating, meaning it is not painted, stained, or sealed, it is just normal wood. Bora-Care is made only for wood, and you do not have to know exactly where the termites are for it to work which is a plus. Bora-Care is sprayed evenly over all exposed surfaces of the wood and actually penetrates through the entire piece of wood. When the termites in the wood try to consume the wood after it has been treated, they ingest the Bora-Care with the wood and die. No matter where they are in the wood the Bora-Care will find them as long as you treated the exposed wood that you can see. The other main benefit is that Bora-Care stays in the wood forever, so you will not have to worry about termites or beetles infesting the wood that you treated ever again.
If you have subterranean termites in your home, we recommend doing the liquid treatment as outlined in the "How To Do A Termite Treatment" article and then inside the home where you know you have the termites you will treat them directly by injecting the Termidor into the wall where the termites actively are or cutting a hole into the wall and spraying on the wood or however you can get the product to the termites. It only needs to touch a few termites to work. If you do not know where the termites are actively infesting we do have a great article here on how to do your own inspection.
Termidor SC is not labeled to eradicate house flies as it should be applied in the soil for a termite treatment and only on the exterior surface (1ft up and 1 ft out) directly up against the foundation for insects that crawl on top of the soil. For more information on treating house flies, please read the article below. Please let us know if you need anything else.