To control a gnat population naturally, allow your houseplants to dry out as much as possible and then apply sticky traps to trap the adult flies so that they cannot lay eggs.
Swarming termites: Have you seen termite wings around window sills, or in the corners around exterior eaves? It may be a termite swarm which can be a sign of swarming termites infestation. If you have, contact us to request a free limited inpection.