Textured Shower Deep Cleaner for Stubborn Grime

The user is highly frustrated with persistent grime in a textured shower, having tried multiple common cleaners (Scrub Daddy paste, Bar Keepers Friend, spray cleaners, bleach) without success. This indicates an unmet need for a more powerful, specialized cleaning solution specifically designed to penetrate and clean the intricate surfaces of textured showers effectively, where standard products fail. A dedicated product for 'textured surfaces' could solve this common pain point.