Yes, cut stump treatments with Tordon are very dangerous. The only time and place I have ever used it was where it was understood that there would be no broadleaved vegetation within 50 ft of the treated area. At one time, the DOA would use toothpicks soaked on Tordon to kill bannana trees infected with Bunchy Top virus. Big mistake. The few miligrams of Tordon on each toothpick was enough to smoke all trees and shrubs around the bannana. RoundUp is safer for cut stump treatments. Garlon is more effective, but it can transfer to other trees via root grafting as well, but not as much as Tordon.