... , and azadirachtol. The leaves and barks contain Alkaloids, Saponins, Tannins, Glycosides Combined anthraquinones, Anthraquinone derivatives, Terpenes, Flavonoids , Reducing sugars, Ketones, Pentoses, Monosaccharide ... , ticks, and nematodes, by affecting their behaviour and physiology. Neem does not normally kill pests right away, rather it repels them ...