These ready-to-use The Big Cheese All-Weather Block Bait are suitable for a variety of mouse and rat stations. They are weather resistant and stay fresh throughout all weathers. Use indoor and outdoor to attract and catch rodents using a specially created formula that uses 50% less poison. brbrMain Features: brContains 15 x 10g blocks Contains difenacoum. Suitable for indoor and outdoor use. Please read the product label and instructions before using this product.