Gopher It is the thing to get if gophers are wrecking your yard! We had a horrible infestation of them, so I purchased one...it worked on a far bigger area than it said, and it worked almost overnight! We have not seen one hole or mound all summer! We only put one set of batteries in, and they lasted all summer and they're still good. I'd put it inside a garden peremeter or where you don't mow, as you have to have it deep in the ground and...well, it got mowed over the first time! DUH...But definitely worth re-purchasing!