Ditrac All-Weather Blox gets unsurpassed rodent acceptance and control. The multiple edges appeal to a rodent's desire to gnaw and each block is made with food-grade ingredients and small amounts of paraffin for a highly palatable bait. Ditrac works well in any condition -- wet or dry, indoors or out. A hole in the center of each block allows it to be placed on bait securing rods in bait stations, or nail or wire it in place.