The big Cheese mouse & rat baits pelleted corn cob bait kills mice and rats humanely indoors or outdoors. The Use of Big Cheese Mouse & Rat Bait for effective control of rats and mice both indoors and outside. This product is formulated from refined natural plant material which disrupts the digestive system of rodents. Each filled bait tray contains approx 50g of bait. Protect the pellets from non-target animals, water and excessively damp conditions, sufficient bait for most home and garden infestations.