Glue traps intended for pest control can be deadly to birds.  Songbirds are attracted to insects stuck on glue traps and, all too often, the birds themselves become the victim.  Never use glue traps outdoors or in an open garage.  If you do encounter a bird on a glue trap call your local wildlife rehabilitator immediately and do not attempt to remove the bird.  Exercise caution when using or disposing of hazardous substances (motor oil, cooking oil, cleaning agents, fertilizers, etc.).  Consider organic alternative and natural insect control.