Effectively kill mice and rats with The Big Cheese All-Weather Block Baits. This pack of 30 moisture resistant and high palatability bait blocks even stay fresh in damp or wet weather. They're designed to fit all bait stations and can be used both indoors and outdoors around buildings. Must be used with a tamper-proof bait station (available to purchase separately). Warning: Keep out of reach of children. Contains difenacoum 0.0025% w/w.