Message from: www.helpinganimals.com/wildlife_glueTraps.asp
 
If you encounter an animal stuck to a glue trap, pour a small amount of any kind of cooking or baby oil onto the stuck areas and gently work them free.
 
Glue Traps are without a doubt one of the cruelest methods of killing animals that exists today. These hideous devices consist of pieces of cardboard, fiberboard, or plastic coated with a sticky adhesive designed to capture any small animal who wanders across the surface of it. Glue-trap manufacturers generally direct consumers to throw animals away along with the trap, leaving the animals to suffer for days until they finally die of starvation or dehydration—a cruel death if ever there was one!

Trapped rodents and other animals suffer immeasurably during the days that it takes for them to die. Glue traps rip patches of skin, fur, and feathers off the animals’ bodies as they struggle to escape, and many animals even chew off their own legs trying to free themselves. A few of the “luckier” animals get their noses and mouths or beaks stuck in the glue and suffocate, but even that takes hours.
 
www.helpinganimals.com/factsheet/