JT Eaton 276 Answer Pocket Gopher Bait Block and Control with Moisture Resistant Bait, 4 Blocks First generation bait with specially formulated bricks that attract and eliminate all species of pocket gophers Active ingredient Diphacinone efficiently eliminates pocket gophers 4-blocks of 4-ounce gopher bait will stay palatable to gophers for extended period of time Sold West of the Mississippi only Comes with a 1-year limited warranty