The Duke Dog Proof Coon Trap features a fully enclosed dog proof design with powerful coil springs, a sensitive trigger system and a straight spade staking system. The trap is fired when the raccoon reaches in for your bait, and instead grabs the trigger, firing the trap. When baiting Dog Proof Coon Traps; apply the lure or bait to a cotton ball or sheep's wool. Place below the trigger so the raccoon has to reach past the trigger to get the bait.