Strychnine is used against mice, foxes and on dingo traps. It is a particularly cruel poison that causes convulsions and painful muscle spasms. All cause animals to become very ill before they die. Poisons are not only cruel, they also kill many non-target animals who eat baits, or who eat other animals killed by poison. They don't kill, but cause excruciating pain as they break bones, tear ligaments, and cut into flesh.
Animals also get mouth injuries as they bite at the trap in their desperate effort to get free.
Some animals have been known to chew off their own foot. The animals will be in pain for a long time, depending on how often the traps are checked. They can die of dehydration, infection or even starvation if the traps are not checked regularly. Some trappers put the poison strychnine on traps to avoid having to check them. Traps are not selective - they snap shut on any animal unlucky enough to step on them.