Efficacy of Concussion Blast Equipment for the Elimination of Groundhogs in Burrows

Abstract

Groundhogs cause extensive damage to crops, landscaping, and structures throughout their range. However, control methods can be objectionable to the public. Concussion blasting equipment provides an alternative to historic groundhog control (i.e., live-capture and lethal traps, asphyxiation, poison, and firearms) in suburban and rural settings. Prior to use in our market, we tested the efficacy of the VARMITgetter device during 3 trials in September 2006. Trials were performed to determine the amount of gas (oxygen and propane mix) and length of injection time needed to provide a quick and consistent kill at minimum cost including labor, materials spent, and wear-and-tear. After detonation, dens were excavated to verify the effectiveness of the concussion blast method. During subsequent market testing, calibrations were adjusted to account for soil type, soil compaction, age of the burrow system, number of burrow entrances, and ground moisture. Testing to date has proven this method to be a viable alternative over other methods. Unique advantages of concussion blasting equipment include: one site visit; rapid kill; no equipment left behind; increased safety to pets, livestock, and people; and increased employee productivity.