Dosage; Mix 2.5 ml of Theeta in one litre of water.Azadirachtin is a useful insecticide as it has low mammalian toxicity, is readily biodegradable, is a natural extract, has a long-history of safe use, plus it works primarily as an anti-feedant, rather than as a biocide.Azadirachtin can be used in both conventional and organic farming.