Recently I had sprayed my Horse Pasture and lawn with 2 4 d, I also spot sprayed around the house with Roundup. My neighbor came back from a trip and informed me that he had lost 2 hives. I told him where I had sprayed which was at the closest 25 meters from his hives. the spray boom nozzles on 4wheeler are a heavy spray not a mist. He never directly said it was my fault, and I would feel bad if it was. The research i have done indicate that at least 2 4 D is pretty harmless to Honey Bees. If you can guide me to other articles or links to confirm this, as well as other Herbicides to avoid that may be harmful that would be great. I would like to start my own hives this summer and want to avoid unnecessary loss of hives. below is one article I found. Thanks Abstract We fed herbicides to newly emerged worker Apis mellifera L. in 60% sucrose syrup at concentrations of 0, 10, 100, and 1000 parts per million by weight. The following herbicides were relatively nontoxic to honey bees at all concentrations: 2,4-D, 2,4,5-T, silvex, 2,4-DB, dicamba, 2,3,6-TBA, chloramben, picloram, Ethrel, 2-chloroethylphosphonic acid, EPTC, and dalapon. The following were extremely toxic at 100 and 1000 ppmw concentrations: paraquat, MAA, MSMA, DSMA, hexaflurate, and cacodylic acid. Two compounds, bromoxynil and endothall, were very toxic only at 1000 parts per million by weight (ppmw) concentration. Paraquat, MAA, and cacodylic acid were moderately toxic at 10 ppmw. No significant differences were noted in the toxicity of purified and commercially formulated herbicides.