it replaces chemical products and does not attack plastic or metal pipes. the school also offers full day programs that include lunch as well as fun recreational activities after the lessons. it’s as if we have the space, the park lands, the mobile homes and the driveways to park them, but don’t dare use them for anything other than recreational! planning and preparing or a new life is exciting!! i will see if i can proceed without the missing information and i will let you know if i can’t. 