Can someone share the best cleaner in the market that really will do the job to clean old bathtub with stains?

Will appreciate an answer.
Can someone share the best cleaner in the market that really will do the job to clean old bathtub with stains?
Definitely "Comet". The old time powder with beach in it. It works great and is the only thing I use in my shower and tub.


Oh, and it's cheap too!
Reply:Comet or bleach water. I've used it for yrs.. %26amp; my mom used it %26amp; my gram...
Reply:"barkeepers friend" and a scrub brush. LOVE that stuff!
Reply:Fill it with water pour in bleach and let it stand for awhile
Reply:Have you tried full strength household bleach? Watch your hands though.
Reply:I am wondering the same thing. Do not use comet on fiberglass! And the bleach water thing didn't work on mine. My issue is the built-in traction that has all the dirt. I will try Soft Scrub with bleach next time. Let it sit, then rinse. It's not abrasive like comet and it worked well removing stains out of my old fiberglass kitchen sink. It works on other surfaces, too. Good luck.