Fluon is a Teflon based paint. Applied around the top of a glass or plastic enclosure, it creates a barrier across which insects such as crickets or cockroaches cannot pass. It is non-toxic and will not cause any problems to the insects that contact it. It is applied as a paint that dries rapidly and is instantly effective. If managed appropriately (rolled once a month), the product will last for a period up to 12 months. It can be reapplied as often as needed (usually every 2-3 months).