type of termite you may have. Subterranean termites live underground and can enter your home from ground level or below. They can also build mudding tubes above the ground. Wood to ground contact is the most common way for entry, e.g. deck posts, door frames, supports and external stair cases. They can also travel through cracks in the concrete slabs and brick walls.
Dry wood termites begin as swarmers known as (alates) they can fly into cracks and crevices of your home and will lay eggs to start a new colony. Dry wood termites are hard to control as they can enter your home on any level.