Fumaphos Fumigation Tablets is a solid, highly potent fumigant to be used for the fumigation of silos, ships, or warehouses. It generates Phosphine gas which is an economical, effective, easy-to-use fumigant. It controls pests in grain, flour, plant products, wood, processed food, and other stored commodities. It penetrates well into the stored grain material and after aeration, leaves no toxic residue.