SEAL-TITE from Parson Environmental Products is an easy-to-use way to stop infiltration. It is a moisture-insensitive, two-component, fast-reacting hydrophobic polyurethane grout designed to stop high-volume active leaks in manholes, pump stations and other wastewater structures. It is packaged in a dual cartridge with a static mixer, and is injected at or near the source of the leak, using a manual dual-component caulk gun. It contains no solvents, CFCs or HFCs. It cures to a dense, rigid mass in approximately 30 seconds, and stops high-volume leaks up to 50 gpm. 800/356-9023; www.parsonenvironmental.com.