ptchap. Winterizing the toilet is not hard. After I''ve drained all the other stuff (low point drains, water heater, water tank, toilet holding tank, etc.), then I blow out all the water lines by attaching my air compressor to the city water inlet, then setting it to blow 30 lbs. of pressure into the lines. Close the faucets, then open them one by one and let the compressor blow out any residual water that remains in the line. Work your way around the camper, blowing them all out (don't forget the outside shower lines). Then, with all the other faucets closed, hold the toilet flush button down and let the compressor blow the water out of that line. Finally, because, I'm an anal type, I also pump RV antifreeze through the lines, using the water pump set to pump directly from the antifreeze jug. Again, take them one by one. Open the faucets one-by-one until you see the antifreeze coming out the spigot. Then close that spigot and move on to the next. Do the same thing at the toilet: hold the flush button down until you see the pink antifreeze coming out into the toilet bowl. Then I shut it down. That's it! I usually dump a little in the holding tank, and the sink P trap. Again, don't forget to include the outside shower. If you have one of those blankety-blank water filters in line under the driver's side bunk, make sure there's no water left in it also. Hope this helps.