and for those of you who run into this problem I'll save you some money included pics a failed devices those Sonic mole and gopher repellers do not work I bought nine of them of different makes and modelsthat gopher hole popped up within 20 in of two of them... The gas bomb is just potassium nitrate coal and sulfur the basic ingredients to gunpowder....for those of you who got stuck watching that cheesy Star trek episode when you were young with your parents LOL
