A RatMat system is humane. Live rodents leave the area. RatMat is a low-maintenance, low cost system lasting years. The shock is pulsed at 1 per second (1Hz), the maximum frequency allowed by law. The pulse is 3000 volts but very low amperage to make it safe. It's <0.1% as powerful as a defibrillator. Safe. 40 times less powerful than a farmers field fence.