What is a Termite Swarmer?
A termite swarmer is a flying termite. It is an "alate" or "reproductive". When a termite colony gets big enough, it is ready to start new colonies and to do that, it has to send out these reproductives that will mate literally in the air. They are like missionaries, once they mate they want to start a completely new colony with a new queen.
What is significant about termite swarmers is that if the colony is large enough to produce reproductives, then it has been in the structure for at least 3 years and could have been there for much longer. Also, it means that the colony is large and has been causing a lot of damage over the years.
So how much damage can a native subterranean termite colony cause in a year. Some estimates are roughly 16 lbs of lumber for an average mature colony. That doesn't seem like much but if the colony has been there for 10 years, the damage can really add up.
How do you know if you have termite swarmers? You either see them actually flying. If you do, they will pop out of an exit hole one after another in rapid succession and then start flying around the room if inside. They will be attracted to light or windows.
You may see their wings on window sills or in spider webs. Or you may only see tiny little pinholes in sheetrock that were the exit holes for those termites exiting in succession.
If you have or suspect that you have termite swarmers, you should get a professional to evaluate immediately.