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Clean Air Purge III changed their name to just Purge III. This is a metered aerosol product meaning it's designed to go into an automatic pesticide dispenser. The active ingredient is pyrethrin 0.975%.
When released into the open, Purge III insecticide creates an invisible barrier that repeals and eliminates flies, mosquitoes, gnats and small months in the area. Use this in any places where you see those pests.