A composition having a mixture of discreet particles, each particle comprising an active substance and a coating material, the active substance being at least partially coated with the coating material. The mixture of discreet particles includes a first batch of first particles, the first particles of the first batch having a first average weight % ratio of the active substance to the coating material； and a second batch of second particles, the second particles of the second batch having a second average weight % ratio of the active substance to the coating material, the second average weight ratio being different from the first average weight ratio.
