K.M.
If you are into green, then use some baking soda and make a paste to get rid of the hard stuff. Do you have hard water or use bar soap? That will always be a challenge then. Switching to botanically based liquid soaps is so easy and you'll never want to go back. Install a shower filter if you have hard water. Many "green" products are not as user friendly as one may think. I use products from Young Living Essential oils that work great, smell wonderful - not toxic!
Here's hoping for the best so you don't have to keep cleaning all the time. Better things to do, right?
Good luck,
K.
Wellness Consultant