Wilson Predator Warfarin Re-usable Bait Station Kit is a lockable, tamper-resistant product designed to effectively kill house mice indoors. It should be placed along walls, by gnawed openings, in or beside burrows, in corners and concealed places, between floors and walls, or in locations where mouse activity or mice have been observed. Certified child-resistant, this bait station comes with sixteen 28-g bait blocks for 16 uses and includes a locking key.