MY NEIGHBORS EXPERIENCED A HORRIBLE SITUATION IN WHICH ONE OF THEIR TENANTS FLUSHED GOBS OF BLUE PAPER TOWELING (LIKE YOU GET AT A GAS STATION TO CLEAN WINDOWS), AND EXTRA LARGE ABSORBENT TAMPONS DOWN THE TOILET, THUS CLOGGING THE EXTERIOR LINE, AND HAVING SEWAGE BACKED UP IN THEIR CRAWL SPACE UNDER THEIR HOUSE.  THE CRAWL SPACE IS BRICK-SIDED.  HOW ABOUT MAKING A CLOROX/DISINFECTING PRODUCT THAT CAN BE USED ON VERTICAL WALLS, THEN WIPED OR RINSED OFF IF NEEDED, THAT WOULD HELP IN A PROJECT LIKE THAT?