Our camper came with a 9 gallon black water tank (toilet sewage). Where we camp there is no place to dispose of the black water. So I bought a Poop Canon, which made it easy to off load the sewage at home and even flush out the tank.

CLICK A THUMBNAIL TO VIEW THE FULL SIZE PICTURE. YOU CAN SCROLL THROUGH THE FULL SIZED PICTURES BY MOVING YOUR CURSOR TO THE LEFT OR RIGHT EDGE NEAR THE CENTER AND PRESSING THE  ARROW, OR TAPPING THE EDGE (MOBILE DEVICES).