Honestly, don't try this at home! This guy was house sitting for his parents and actually used a blowtorch to kill black widows! YES! Not the best idea ever, because it caught is parents house on FIRE! Like big time! it too 29 firefighters to put out the fire. Thankfully no one was injured when it happened. They say the exact cause has not been determined, but the fire fighters are pretty sure the blowtorch is to blame! DUH!