Before you do dump holding tanks: Make sure that your sewer hose is in good condition and has end connectors properly installed. Have a small low stool to sit on while you connect the sewer hose to the RV dump outlet.(Camping world sells small collapsible stools). Put on latex gloves, make sure that you turn and latch hose connector securely to the RV. Insert sewer hose securely into sewer so it can't come out and spill all over. Place a rock etc. against the hose. The bigger dump handle is for the black (toilet waste) water. The smaller dump valve handle is for the grey ( sink and shower waste water). After you dump the black water tank, close its valve and open the gray water valve and wait until it stops draining. Disconnect hose from RV. If rinse water is available run clear water through sewer hose to flush out any remaining stuff and let it drain out completely, then put sewer hose away. Rinse any remaining stuff into the sewer if at the communal dump. Remove latex gloves and put into trash. Leave nothing behind for the next user. Wash your hands thoroughly and congratualate yourself on a job well done. Some RV owners never use their own RV toilet for fear/distaste of dumping chores, don't be a lily.
