Apparently, the gophers were ready for my chemical warfare and must have recently stockpiled some gas masks. Just two days after my attempt at using weapons of mass destruction, the gophers have returned my lawn (well not really a lawn, but if I mow the weeds it resembles one) to the hilly state that they prefer. On inspecting this freshly dug hole, I swear I could hear really high pitched laughter emanating from within.