ProPaxx Elite from J&J Chemical is a high-performance, long-lasting odor-eliminating pack that is fast dissolving, water soluble, self mixing and nonstaining. It provides a deep blue color and is formulated with multiple odor-control components designed to engage when needed. The time-released fragrances can keep portable restrooms smelling fresh while helping to clean the holding tank and provide around-the-clock protection. 800-345-3303; www.jjchem.com.