Nuisance Wildlife companies use glue traps normally, it's on the inside of a house to trap rats or mice which is even cruel for them because they get stuck to the Trap and then they might even chew their leg off trying to get free, but when they place them outside; insects, lizards and other small things like that get stuck to the trap. Then birds get stuck to the trap and they die a very, very slow agonizing death. Other predator type animals also die from trying to get food off the traps; i.e. Owls, Hawks and opossums