Flea Medicine A flea is any insect that belongs to the order Siphonaptera, which contains more than 2,000 species. Fleas
are wingless insects that suck blood from a variety of animals. The flea that most commonly infests dogs is
Ctenocephalides canis, commonly known as the dog flea. Flea medicines can generally be categorized according
to the growth stage of the flea that it affects. An adulticide kills adult fleas, while insect development inhibitors
and insect growth regulators interfere with the earlier growth stages of the flea. The flea medicine that is effective
against multiple growth stages is known generically as insecticides.
The flea medicine that contains lufenuron as its active ingredient is an IDI that inhibits the development of chitin,
which is the primary component of an adult flea's exoskeleton. Program is a common preparation of lufenuron,
which is available from veterinarians. Methoprene is an IGR that prevents the eggs from growing and is available
in many commercial preparations. Flea medicines for dogs also contain active ingredients such as imidacloprid and
permethrin. Cedar oil is an insecticide that is effective against a variety of insects, including dog fleas. It is a natural
substance and has a low toxicity level for humans and pets.