Fastrac Place Pacs are manufactured from an advanced formulation that produces a fresh tasting, highly compressed pellet that mice and rats love. Fastrac offers a lethal dose of the active ingredient bromethalin in a single feeding, so you will see results quickly. Pellets hold up well in adverse conditions, making them ideal for use in damp environments. The pellets are purple so they’re easy to see, and they’re hard to satisfy rodents' desire to gnaw. Each pail contains 121 pacs.