The Ninth Circuit ordered EPA to respond to a petition requesting that the Agency end the use of the pesticide tetrachlorvinphos (TCVP) in household pet products. An environmental group submitted an administrative petition to cancel the registration of TCVP in 2009, following a peer-reviewed study t...

The Ninth Circuit granted environmental groups' petition to review EPA's 2017 order maintaining a tolerance for the pesticide chlorpyrifos, and vacated the Agency's order. The groups argued that the Agency's need for additional scientific research was not a valid ground for maintaining a tolerance t...

A district court granted in part but largely denied in part EPA's motion to dismiss a lawsuit filed by environmental groups alleging that EPA failed to consult with federal wildlife agencies before registering over 2,000 pesticide products. The groups argued that EPA violated the ESA by failing to e...

A district court denied a pesticide manufacturer's motion to dismiss a lawsuit alleging that the label on one of its weed-killing products is false and misleading. The product's label states that it targets an enzyme "found in plants but not in people or pets." But an anti-pesticide group alleges th...

The Ninth Circuit vacated EPA's conditional registration of a pesticide because the Agency failed to support its requisite finding that registration was in the public interest. A pesticide manufacturer applied to register a pesticide that uses nanosilver as its active ingredient. EPA conditionally r...

A district court, on motions for summary judgment, dismissed a lawsuit against EPA filed by a group of beekeepers, farmers, and organizations concerned about the effect of pesticide-treated seeds on bees and other pollinators. The plaintiffs argued that the practice of coating seeds with neonicotino...