– SudSafe Car Wash Kits are used to drain potentially harmful runoff from car washes into grassy areas instead rivers around Marine Corps Base Camp Lejeune. A standard kit has a tub insert that goes into a drain to catch the water, but other improvised variations of the kit can also be assembled to accommodate different drainage styles. - – SudSafe Car Wash Kits are used to drain potentially harmful runoff from car washes into grassy areas instead rivers around Marine Corps Base Camp Lejeune. A standard kit has a tub insert that goes into a drain to catch the water, but other improvised variations of the kit can also be assembled to accommodate different drainage styles.