Certain anticoagulants may become available for use in burrow builders. Grain or pellet formulations are available. Milo is the most common grain bait. Rolled oats and wheat are also used. Choose grains that work best with the seed plate in your seed box.
Strychnine acts more quickly than zinc phosphide.
Nebraska strychnine formulations range from 0.25 to 0.5 percent active ingredient. With the higher concentrations fewer grains or pellets are required to kill pocket gophers. Thus less bait needs to be applied. The amount of bait needed depends on the type and rate of bait in each drop, the distance between drops, and the distance between passes of the machine. Read the pesticide label for the recommended amount of bait per acre.