It’s winter in Southwest Florida and everyone knows it. Does this mean the pests are at rest? Of course not. Because the current rash of cold weather the termites are hard at work. Probably eating at the walls that are keeping you warm now.
This is the first visible evidence of termites and their swarm is commonly mistaken as "flying ants". Turning on your heat on a cold day can cause these termites to immediately start flying out of your walls. Fire ants, Argentine ants and other ant species, as well as American cockroaches, try to move indoors during this time as well, seeking warmth from the colder temperatures.
Termites construct these tubes for shelter as they travel between their underground colonies and the structure. To help determine if an infestation is active, the tubes may be broken open and checked for the presence of small, creamy-white more on termites here.