The POWRPAK Series for portable restrooms and holding tanks from CPACEX offers continuous odor control and fragrance for up to seven days in the extreme heat of the summer. The additional effervescence ensures that the packet will dissolve quickly and disperse evenly throughout the holding tank. The packets are available in five different formulations to fit specific applications and climates. Packs are biodegradable and contain non-staining rich blue dye. 419/450-6208; www.cpacex.com; Booth #1773