Using rodenticides around the home is the most common method for controlling rats and mice. Although extremely effective at killing rodent pests they can also be harmful to non-target species including pets, wildlife and people. Always read the instructions before placing baits and immediately remove carcasses to minimise risk of secondary poisoning. The Big Cheese Ultra Power Fast Action Bait Blocks are a single feed kill bait block that contains the most powerful active ingredient in rodent control. The bait blocks are formulated for long term palatability in all weather conditions, making them ideal for use both indoor and out.