What Attracts Fleas to Humans?

Fleas are parasitic insects that live on animals and humans alike. They feed on the blood of mammals and birds. The most common flea found in the United States is the cat flea, but they can bite humans as well. There are also “sand fleas” but these are actually tiny crustaceans, not insects, and they do not infest humans’ homes.

Fleas have great sense of smell and can detect trace amounts of carbon dioxide in the air. When they are exposed to short bursts of carbon dioxide, their activity peaks. This response is also enhanced by warmth and humidity. However, the exact reason for flea attraction is unknown.

Fleas prefer warm and humid environments with lots of hiding places. These insects are found in homes that have carpeting because they can hide in carpet fibers. In addition, they can live on clothing, furniture, and bedding. They can also survive in outdoor areas where animals can find shelter.

Insect repellents contain chemicals such as DEET and picaridin. You can also use essential oils to repel fleas. These oils can be mixed with a carrier oil and rubbed on the skin. Many people also wash their bedding in hot water, which kills fleas and their eggs.