Can You See Fleas With UV Light?

UV light is a valuable tool to detect fleas, but they can be difficult to spot with normal light. UV light has unique properties, including a long weave length and higher energy. It also shows fleas in a glowing, reflective fashion. This enables you to spot fleas in dark areas.

Fleas are very small and can be hard to see, but the phosphors in their outer shells make them glow in the dark when exposed to UV light. This makes it easier to spot fleas, especially in dark areas, like on wooden floors. UV-light will also kill flea eggs, as they will break down their DNA when exposed to the light. Make sure the light source is at least 20 cm away from the flea eggs.

Another way to spot fleas is to apply ultraviolet light outside the sleeping area. Fleas are attracted to light, and they will jump towards it if they think it is food. The light will interrupt the shadow cast by a potential host, and this will deter the fleas from jumping over it.

Fleas reproduce after a blood meal. The larvae are white and have no legs. They develop over a period of a few days. They are only half an inch long, and their eggs can weigh up to 0.5 mm. These eggs represent half of the flea population in a home.