Does Lazy Witch Shower Cleaner really work?

Yes, it absolutely does.

How do I dilute Lazy Witch Shower Cleaner?

Dilute with water at a ratio of 3 parts water to 1 part shower cleaner.

Do I need to scrub when using Lazy Witch Shower Cleaner?

There is no need to scrub at all! After diluting the shower cleaner, spray on evenly, allow it some time to do its work, and rinse off. The plant-based acids in the shower cleaner work on dissolving soap scum immediately.