Fly Ax is a granular bait that is highly attractive to many species of flies including house flies, blow flies, biting, nuisance and bot flies. It has a fly sex attractant plus other ingredients to attract flies, flies feeding on the bait are quickly killed after ingestion. Active Ingredients; The insecticide Methomyl 10g/kg Fly sex attractant Tricolure*(Muscalure) Plus Gustative baits. Formulated and produced in New Zealand. A preventative product that reduces the possibility of fly populations from establishing and is the key to prevent populations from becoming infestations and reducing the likelihood of fly related problems.