What if the rotenone gets into the air?
No health effects to the public from rotenone used as a fish management substance are known. In trials of airborne drift in the Lower 48, the highest rotenone concentrations found during treatments were approximately 1,000 times lower than what is estimated to be safe levels. There will not be any drift into air from projects involving liquid rotenone. Liquid rotenone is applied directly to the water.