I've heard they kill copper heads but I kill those myself so appreciate but don't need the oppussum help . I used to only kill what I ate but now believe as a good steward to the land and animals I've been blessed with I should and will take as many predators as I can shoot or trap in order to help quail and other birds and fawns and other desirable animal numbers to increase .not enough predators hunting predators and probably not as many trappers and even the number of farmers who shoot them have declined leaving coyotes , foxes and other predators to multiply. Happy hunting