Termidor SC - Questions & Answers

If you have subterranean termites, you should perform a termite trenching treatment outside the structure and in the crawl space in accordance with our Subterranean Termite Treatment Guide with a non-repellent termiticide such as Termidor SC. Just spraying insecticide on the surface of the dirt will not help and is not an approved or appropriate use.

Termidor is the best product for termite treatments, hands down.  It is odorless, and not only that, but it is made to bond to the soil and it will not run off or leach through the soil, so it is perfect for treatments in wet conditions. on a crawl space house,  you would trench and treat around the exterior of the structure, and you also need to trench and treat around the piers under the crawl space.  As long as you are using Termidor, you are not required to treat the inside perimeter or inside the hollow block, but of course if you want to you can. 

If your crawlspace is sealed then no you would not be able to dig a trench and apply Termidor inside the crawlspace, you would only apply it around the outside perimeter of your home. 

We actually recommend, if possible, to apply Termidor in a trench inside the crawl space. You will use the same method as you do around the entire structure.  If you are not able to do so it might be best to contact a professional company for options.

With the superior technology behind Termidor, you only have to trench the outside of the foundation and around each pier/post under the crawlspace. If you were using Dominion 2L you would have to trench the inside and outside wall of the foundation and the piers/posts. You can spot spray in wall voids and you will likely want to drill into the center of the piers as well as doing the trench around them. Everywhere you dig you will follow the method of digging a 6x6 trench and use 4 gallons to every 10 linear feet. 

To treat pier and beam you would trench around the piers and beams and apply termidor. You would also trench in the crawl space. Please see our article on barrier treatments.  

Termidor is only labeled to apply two times a year but may be applied more often if need be.  Typically most insecticides will last up to 3 months at the most depending on climate and weather patterns.

Everywhere you dig you will follow the method of digging a 6x6 trench and use 4 gallons of Termidor SC solution for every 10 linear feet of trenching. 

No matter whether your home sits on a slab, crawl space, or basement the 6x6 trench is all that is required around the outside of the home along with any drilling you may have to do through concrete barriers like patios and driveways. If the holes in the joints are still there you can certainly inject the product into the same holes they treating in previously as well. 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. If you use Dominion you would have to trench the inside and the outside of the crawlspace foundation as well as the piers. The Termidor will last for 10 years to protect your home and the Dominion will last for 7 years. Please let us know if you have any other questions and you can review our article on How To Do A Termite Treatment for more tips on doing it yourself.