The first of four risk assessments for insecticides that could potentially harm bees was released on Wednesday.
The Environmental Protection Agency assessment indicates the pesticide Imidacloprid could be a risk to hives when it is in contact with crops that attract pollinators.
Imidacloprid is an insecticide that mimics nicotine which is toxic to insects.
The EPA data shows citrus and cotton tested may have residue of the pesticide above threshold levels.
Bayer makes the product, in a statement they slam the assessment saying the EPA overestimates the potential of exposure and ignores the benefits.
The EPA proposes a prohibition on pesticides that kill bees and will release three more assessments on three other pesticides at the end of the year.