I've heard of it, never tried it. I've also heard of tide pods, dishwashing detergent, water softening powder, bags of ice, commercial treatments, Geo method, Rid-X, pine sol, bleach, and who knows how many other concoctions to try to clean out a tank full of cr*p.
If you're trying to clean off a sensor you might have some luck with one of these ideas. Or you could try just filling the tank up with water and let it sit for a few hours before draining it. You might be surprised at how effective a tank full of water can be.