Tub Cleaner - vinegar and dish soap. Heat c white vinegar in m'wave for 90 sec, pour int spray bottle. Add c BLUE Dawn dish soap. Shake to mix. Spray on surface, let it sit 1 hour. Wipe then rinse with water. Should also take soap scum off shower doors.
1 cup Heinz Cleaning Vinegar, & 1 cup blue Dawn (must be blue)". Heat vinegar & pour into spray bottle. Use a good spray bottle. Add dawn to vinegar & shake. It will be a little thick. Spray on tub & leave 1 hour. Then just rinse off. No more scrubbing
How To Clean Bathtub Jets with Basic Household Ingredients
Great Tips to Clean the Bathtub and the Shower Cabin Effortless
It works, but you do have to scrub a bit: DIY bathtub cleaner recipe; cup white vinegar warmed in microwave for 90 seconds and cup Dawn or other dish soap. Put in spray bottle. Spray and let it sit on dirty tub for about 2 hours before scrubbing.