The dog flea, Ctenocephalides canis and the cat flea, Ctenocephalides felis, belong to the flea species that bite humans in the absence of a more suitable host. The two flea species are similar.
Dog Flea was once fairly common, but today, the cat flea is more common. Cat fleas can live on both dogs and cats, while dogs’ fleas are never seen on cats. In actual practice, the pets are nearly almost infested by cat fleas, but if a dog has dog fleas, their biology and control are the same. Cat fleas are a relatively new problem. The increase in the number of inquiries about the species to the Danish National Pest Infestation Laboratory began in the late 1960s. Today, it is estimated that one third of all Danish dogs and cats are infested by fleas each year. It is not known why cat fleas have become so common in our parts of the world.
The number of pets has increased and at the same time, it has become increasingly common for the animals to have access to all rooms of the house. Another contributing factor is the increasingly common wall-to-wall carpeting. It is difficult to remove flea eggs and larva from the carpets just by cleaning them. From this perspective, the flea problem is a self-made problem.