Yes probing works on all snakes, but popping not so much. You wouldn't catch anyone deal popping a GTP or ETB, ,also other smaller snakes like corns can be very difficult to pop. So sometimes probing with a very tiny probe is better, or if you have a much larger snake like a burm or Retic, unless your hulk, you wont be able to pop them. That's when probing comes in handy sometimes when popping just isn't possible.