NRDC is suing the U.S. Environmental Protection Agency for greenlighting the use of neonics without first considering their harm to endangered species.

Despite study after study showing that neonic pesticides are harmful to bees and other pollinators, the U.S. Environmental Protection Agency continues to allow products containing these toxic chemicals to enter the market. In its approvals, however, the EPA has failed to consult with the U.S. Fish and Wildlife Service on the insecticides’ impact on threatened or endangered species—a clear violation of the federal Endangered Species Act.

In response, NRDC filed a lawsuit today that seeks to cancel the registrations of nearly 100 products containing three widely used neonic pesticides—acetamiprid, dinotefuran, and imidacloprid—until the EPA complies with the law. “The EPA ignored endangered bees, butterflies, and birds when it approved the widespread use of neonics,” said Rebecca Riley, a senior attorney in NRDC’s Land & Wildlife program. “Massive pollinator die-offs across the country show that these pesticides cause serious harm to wildlife.”

The use of neonic pesticides has soared in recent years, and populations of bees and other critical pollinators have experienced sharp decline. As of 2011, 3.5 million pounds of neonics were applied to 127 million acres of crops, double the amount five years earlier. And unlike traditional pesticides, neonics are completely absorbed by a plant, becoming part of its pollen, nectar, leaves, and roots—making the entire thing toxic. And because neonics can stick around in soil and water for years, they are essentially uncontainable and are pervasive throughout the United States.