I had a mouse that evaded all traps. It did like peanut butter but it would lick the trap clean and not set that sucker off. I finally made two balls of peanut butter and ground up one of my wife's blood pressure pills for each ball and let him lick that of off the traps. He licked the first one clean and died just as he got to the second one. My wife's dose is a half of a pill so you can imagine what it did to the mouse's pressure. -- Gadgets