Final All-Weather Blox kills rats and mice. Norway rats, roof rats, meadow voles, and house mice may consume a lethal dose in one nights feeding with first dead rodents appearing a day or so after feeding begins. The blox are individual one ounce pieces with a hole drilled through the center for ease of installation in the bait station. Simply thread the one ounce pieces onto the wire inside the tamper proof rat box (3 or 4 recommended) or place one into the tamper proof mouse bait container. There are approximately 40 blox in a 4 lb. bucket and approximately 12 blox in a 1 lb. city pack. Packaged in a1 lb., 4 lb. or 18 lb. bucket. May be used in theProtecta Sidekick, JT Eaton Strongbox or the Aeigis Mouse Bait Station.