Termidor SC is a great choice for termite treatments. It lasts 10+ years in the soil if applied as directed. I have included a termite article below for additional information on treating around your structure. If you are going to be treating the wood in the crawlspace, we recommend that you apply Bora-Care if treating for drywood termites.
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.
While Termidor SC is a non repellent insecticide and most others are repellent, as long as you are thoroughly rinsing the sprayer between products it should be fine. We would recommend triple rinsing all parts of the sprayer before changing products.
Termidor SC may be used outdoors only for spider control, per the product label. We do have a great Spider Control Kit that includes CB-80 Aerosol Insecticide for contact spraying, and Temprid SC, which can be applied indoors as a crack and crevice or spot treatment. This kit also contains glue boards, which are excellent tools for monitoring and for catching stray spiders indoors. Please see our Spider Treatment Article for more information and tips about preventing spider infestations.
You can use Termidor SC for the listed pests twice a year at a rate of 0.8 oz (0.06% finished solution) per gallon of water or up to 4 times a year at a rate of 0.4 oz (0.03% finished solution) per gallon of water, sprayed 1 to 2 feet up the foundation and out on the ground.
Termidor SC can be applied twice a year (1 ft up and 1 ft out) up against the structure for a pest control barrier at 0.8 oz per gallon of water. It can be applied four times a year at 0.4 fl oz per gallon of water in the same area.
Yes, we do ship Termidor SC to Puerto Rico. There will be shipping costs since this is outside of the continental US.
Termidor SC would be used to directly spot treat the active infestation by drilling into the infested wood and spraying into the gallery directly. You would also want to apply in a trench around the home. We have a step by step guide that will walk you through how to do your own termite trenching treatment. You can see the guide by clicking on the link here.
You will want to give adequate time for the herbicide to dry and absorb into the plants you are treating with it before using another product over top. This will help to make sure there are no compatibility issues between the two products as well as to ensure the insecticide application does not wash away any of the herbicide you applied. Termidor SC should be applied only to the ground 1 foot out from the foundation and 1 foot up onto the structure.