Make sure that at least four inches of your foundation can be seen. Siding should not extend into the soil. Mulch and soil should not be high enough to cover the siding. Make sure water drains away from the foundation. Accumulation of water next to the foundation is important for the survival of a termite colony.
Rain gutters are ideal, as long as the downspouts direct water away from the house or building.
Correct roof or plumbing leaks as soon as they are detected. They can allow termites to survive above the ground. Controlling the Swarm inside Darken the Room where the swarm is occurring Vacuum up the termites, then dispose of bag. Don't use pesticides . Cool down the Room.