When choosing a pest control solution for your tunneling issues, choosing a brand that you can trust is critical! The AMDRO Gopher Gasser has been a tried and method used by professional for years! Labeled to eradicate multiple pests, this is a one stop solution for many issues that may arise. Included pests are as followed: pocket gophers, moles, ground squirrels, skunks, Norway rats* and woodchucks.** The gopher gassers work through the gasses produced upon activation. These gasses travel through unplugged burrow systems to eliminate pests quickly and efficiently. Small in size and big on power, these gassers come in a cylinder form small enough to penetrate underground tunnels and burrow systems. Gassers can be used to treat pest problems in lawns, golf courses and even gardens. *Use in North on Norway rats **Not for use on woodchucks in California. Our professional tips are to you and help give . As always, follow the directions exactly as written to maximize this products effectiveness as well as overall safety!