The Big Cheese - Fresh Bait Refills 8 Pack (stv196) The Big Cheese, Fresh Bait Refills, 8 Pack is mess free, sealed capsules that slot into the mouse or rat trap, all you then need to do is peel off the cover, and your trap is baited and ready to go. Unlike existing paste baits, which can be messy, these capsules ensure the bait does not leak. The unique tear off foil keeps the bait fresh increasing its effectiveness.