After high school I worked at a local pet store that used glue traps for rodents. When we found rodents on the traps, we would euthanize them in a fairly "humane" manner. Unfortunately, as humans we sometimes have to kill animals that are pest. We would sometimes catch snakes on the glue traps as well, and the vegetable oil worked pretty good. Usually after just one shed, the snake looked fine and suffered no side effects. I never had a snake die that was caught in the trap. So although the traps seem bad, they may not be as bad as they seem if the person is willing to take the time and free the animal with some oil. I agree, however, that there is probably not a need for a "snake trap"...