Thought I'd share whats has worked for me ... About 5 years age my boss at the farm I work for developed a real hatered for gophers(about the same time that we busted out 3of those nice big expensive side windows on a John Deere with a disk mower in one summer...go figure) anyway I was tasked with eliminating as many of those furry b@stards as I could from the hay fields over that fall-winter.And these are the most efficient traps/ method I have found.