The Environmental Protection Agency released its recommendations for the safety of Spot-On Flea medications last month. Among the new guidelines will be improved labeling for safety and clarity, conditional time-limited registration of new products to allow for better tracking, and standardization of inert ingredients.
The EPA has been collecting and evaluating reports of reactions to these products for the past year. Their conclusion was that while safe, the products should be used with caution and with strict adherence to manufacturer provided instructions. A public comment period is now in effect.