Demining is a dangerous job and, sadly, human deminers are sometimes injured or killed. The rats have a significant advantage over their human demining partners in that a pressure-activated antipersonnel landmine typically requires about five kilograms of pressure to be activated. Our heaviest operational male rats do not exceed 1.5 kilograms and are, therefore, in no danger of activating this type of landmine. However, working around landmines is dangerous work for anyone involved. Fortunately, no rats have been injured or killed in the minefield to date.