Sophisticated new inert pesticide ingredients can play an important role in improving the performance of pesticide formulations and in mediating their environmental effects. While the Environmental Protection Agency has recently recognized that the Federal Insecticide, Fungicide, and Rodenticide Act affords to inert ingredient manufacturers the same exclusive use and data compensation rights available to manufacturers of active ingredients, taking advantage of those rights is cumbersome. To provide the necessary incentive to develop useful new inert ingredients, a new procedure must be developed which recognizes the realities of the market for inert ingredients.