What gets sprayed on the farm doesn’t stay on the farm, suggests a new study that finds frogs living in mountains far away from agricultural fields are contaminated with a range of pesticides, particularly fungicides, used to protect crops from bugs, weeds and molds.

“These fungicides have not been reported in the amphibians to date,” study leader Kelly Smalling, a research hydrologist with the U.S. Geological Survey, told NBC News.