West African countries import roughly $900 million worth of pesticide products each year (Table 1). Because most suppliers do not manufacture pesticide active ingredients domestically, these import figures provide the best available estimate of wholesale market value. In terms of product composition, herbicides dominate, accounting for over 60% of total pesticide use (Table 1). Herbicides kill weeds and thus substitute primarily for hand weeding labor, which has historically dominated farmers’ weed control efforts. Insecticides account for a further 26% of pesticides used. Fungicides and other pest control products, such as nematicides and rodenticides, account for the remaining 12% of pesticides applied by West African farmers.