How do i get the built up soap scum off of a fiber glass shower unit?

https://www.hometalk.com/search/posts?filter=soap%20scum%20removal

Hi there, I did a remodel of a small home earlier this year where a bachelor had lived for 10 years prior and he had NEVER cleaned the shower. After hitting it with every toxic cleaner I could find in the end the only thing that worked was a razor blade to scrape it off. It was time consuming but it worked!

Spray Easy Off (Fume free only!) on shower and/or tub. After 1 hours it will clean completely.

Have you tried full strength cleaning vinegar yet?

1 cup ammonia, 1/2 cup vinegar, 1/4 cup of baking soda. All purpose cleaner that can be mixed with up

Up to 1 gallon of water. Sorry about the cut off.

magic eraser & water