Works for gofers well, but requires repeated use over time. Also it is not easy to find underground pass. Attempt to put pencil/ be sure cover is removed/ directly inside of hole of mount caused it to pushed out next day… by smart gofer. I used metal pin inserted in mount and was probing it to different directions in order to find a gofer pass. Then made a hole for ? in close proximity taking in consideration direction of pass. I wish it would have double packaging to replace ?s after opening /as mentioned by another buyer/. Otherwise might loose distinct garlic aroma and …activity. Tried other recommended remedies / but not KILLERS/ and they did not work.
