Hi,
Hoping for some advise.  We had a termite swarm two days ago and, not knowing what they were, sprayed them with bug spray and moved on.  The building is 1800 sq. feet and made of all metal beams and concrete.  Once we realized they were termites we figured they would just move on having found nothing to eat.  However, it looks like we found their entry point inside the building and we were told they are eating the dry wall.  Could that be true? We had small piles of sand at the base of a toilet with the same insects last summer but they went away after being cleaned once or twice.  Please advise!
Thanks.

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