On the idea of using Bounce sheets to clean it … consider the toxicity of what's in those:
We use something called Sunshine Concentrate as our shower gel (watered down 1/2 and 1/2) and can use a variety of scents with essential oil choices. Since we got off of the liquid soaps or bar soaps as mentioned previously, there's no shower to clean.
It's pretty amazing. About every 3 months we give the sides a once-over and scrub the floor which shows some water staining around the drain where water remains after the shower. Other than that, it keeps itself clean. Pretty cool!