Indications / Actions

Methoprene is added to premise sprays and topical products to eliminate insects (usually fleas) via its ability prevent maturation of eggs or larva.

(s)-methoprene mimics insect juvenile growth hormone, halting development during metamorphosis and larval development. It also concentrates in female flea ovaries, causing non-viable eggs to be produced. When combined with an adulticide (e.g., permethrin, fipronil, phenothrin) all stages of the parasite are killed and re-