The visible first sign that a termite colony around your home is the presence of flying termites or termites with wings commonly called alates or swarmers. These flying termites have generally left the nest in search of partner to establish a new colony.
Signs of Termites can also be found if you leave a light on outside on a hot humid night as some species will swarm at night and are attracted to light sources but most of the time you will notice swarming termites after or before rain at any given time of year. If your finding winged termites inside your home its likely that you have an existing termite infestation and the termites have already built a nest in your home
A most common sign of termites is the appearance of discarded termite wings. You can find them on the floor, window sills, fly screens, roof void and even in external guttering this a sign you have a termite problem.