Wanderlust World Wanderlust World Drive the RV to a certified dump station like those found at campgrounds and some interstate rest stops. Pump out all the waste water from the black water tank.
Drive to your home or parking area, park the RV and set the emergency brake. Turn off all water connections to the RV. Put on the goggles, mask and rubber gloves. Go to the black water tank housing area--typically in the rear of the rig.
Unscrew any hose clamps off the valve at the tank. Pull the hose off the tank's valve. Be prepared for small amounts of residual liquid or waste to seep out the end of the valve or hose.
Insert the hose cleaning tool into the black water tank hose and push through several times to free any accumulated waste or clogs from the hose. Push the cleaner into the tank's valve and push and pull several times to free the valve from clogs.
Attach the hose back to the valve and slide the hose clamp into its original position and tighten. Go inside the RV and turn the water on. Let the toilet fill and flush once or twice to ensure the tank's valve is functioning and allowing the flow into the black water tank.