At first I thought it was working fine ... no new mounds => So mole off? But then the guy put really took off ... and not in safe distance from the "beeper", but nice drum rum. A Upgrading to 3 Pieper in broad wedge to push away the mole piece by piece, did not help ... the guy constantly broke my line of defense.
"Bad weather equipment" are also not the beeper; Leaks with subsequent rusting gave me 2 of 3 devices the rest.