OK, this works! My shower has never been this squeaky clean. 1 cup White vinegar heated up (microwave 1-2 min) with equal amount blue Dawn, gently shake and spray on and wait and then wipe away the soap scum. Thank you Pinterest!
The only SPOT REMOVER you may ever need ~ Mix one part Dawn dish washing liquid with two parts hydrogen peroxide; pour or spray it directly on the stain, and watch it disappear like MAGIC....will need to try this out