Ever built a black tank cleaning wand?

Yes, like others a length of pipe with some small holes in one end. However, I purchased an RV Swivel stick that has the rotating sprayer and I like it over anything I have read about including the permanent in tank rinsers. The reason is with the swivel stick I can move it around and really clean all the sides of the black water tank including the section between the towel bowel and the tank. I find it very convenient since out bathroom is on the same side as our utilities and has a window than I can simple bring in the swivel stick and hose to use. It's also actually very clean to use since after rinsing the tank you can rinse most of the "business end" off by raising it into the section between the toilet bowel and the top of the black tank which is around 6" and the spray rinses off the head quite well.

I thought about installing a fitting inside the bathroom for it, but decided that would even be messier disconnecting it than doing it like I do and when finished I just push it out the window letting it fall onto the ground and then deal with it outside.

Larry