Sandhya Organic Chemicals Private Limited manufactures Zinc Phosphide Rodenticide. Sandhya Dyes and Chemicals is an ISO 9001:2000 certified company. The Zinc Phosphide Rodenticide is used to control rats, mice, voles, ground squirrels, prairie dogs, nutria, muskrats, feral rabbits, and gophers. It can also be used in open dumps, storehouses, warehouses, homes as well as in crop fields for effective control of rodents.