Termidor can take up to 90 days to kill the termite colony completely. It is perfectly normal to still have termites swarm and see activity for a couple of months after the treatment. This is a good thing, it means the termites are still walking through where the company placed the Termidor. Termidor does not kill termites right away for a reason. It takes awhile to kill the termites so they can take it back underground to where the colony and the queen are and spread the Termidor around to the entire colony, thereby leading to devastating effects on the colony. Termidor is the best termite treatment product available and as long as the termite company applied it correctly, it will no doubt solve your termite problem in due time.
Termidor is only labeled to be used inside when treating an active infestion but it does not penetrate into the wood. While we cannot comment on what a professional company is going to do, when treating for an active drywood termite infestation you must treat it directingly.
Both Termidor SC (fipronil for termites) and Bora-Care will work, but Bora-Care is typically the better one to use for this situation. Termidor SC is not a wood treatment product, so for it to work you have to drill holes EXACTLY where the termites are and it has to touch the termites to work. If you miss where they are, it will not work. Also, Termidor SC does not really have any residual in the wood, so after you treat inside the wood with Termidor SC and it dries, that wood is exposed for future termite and beetle infestations.Bora-Care is usually the preferred choice 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
When spraying outdoors around the foundation Termidor SC can last up to 4-6 months and then will need to be reapplied. You can apply Termidor SC as a perimeter spray up to 4 times per year: Twice at the 0.8 oz./gal rate; 4 times at the 0.4 oz. per gallon rate; or 3 times, spraying once at the 0.8 oz. rate and twice at the 0.4 oz. rate.