I believe that glue traps are not a humane way to solve your rodent problems. I have seen a mouse caught on one and it is far from humane. They get caught in the trap in awkward positions and try to chew at The glue getting it stuck in there mouth and throat. Sure they may have poison in the glue so they die faster, but the time until their death is torture. The other problem with them is not just mice get caught in them bird, reptiles and smaller mammals  also fall victim to these traps.