For the animal control professional and trapper, Duke also offers top of the line heavy-duty cage traps featuring all steel rod gravity drop doors, bait protected cage mesh, and a complete internal steel rod frame. Duke standard and heavy-duty cage traps offer the ultimate variety in humane live catch cage traps today. The standard cage traps feature steel rod reinforced spring-loaded doors, pressure sensitive trip mechanisms and a durable, concealable green powder coated finish. All cage trap models are constructed to provide for exceptional durability with no harm to the animal.