Super-concentrated Porta-Pak MAX holding tank deodorizer from Walex contains 50 percent more color and odor control and double the fragrance of regular Porta-Paks. It is available in mint and lavender fragrances, is quick to dissolve, requires no skin contact when handling, and is safe and easy to use. It is packaged in resealable bags for easy transport and distribution. 800/338-3155; www.walex.com.