Are Flea Collars Dangerous to Humans?

Cat fleas are the most common fleas on dogs and cats. They are also the most common fleas to bite humans.

They can cause allergic reactions or itchy, swelling round spots, usually on the legs and feet. You should contact a doctor if the swelling increases, the itchiness is excessive or the bites excrete pus.

Clean your carpets and furniture and treat your pets for fleas. Adult fleas lay their eggs in these places. Apply insecticides to the home and use insecticidal soap or shampoo on pets.