How often do you clean your bathroom? I guess, for us with shower enclosures, it would be more frequent than those with shower cubicles (with shower curtains). Just guessing.
I clean our bathroom every week. It irritates me to see grime in its ripest form - white, "chalky", or green. Our shower enclosure reached such state a few weeks after transferring to our place. Since I got the hang of cleaning the shower enclosures and the whole toilette, I made it a point to clean every week.
I didn't know how to clean it at first. I bought a squeegee and ordinary window cleaner. Failed. Then a friend told me about decalcifying spray. It was mentioned to help me clean the chrome finish faucets, shower head and knobs, but I tried it on the enclosures and the tiles around it . Worked well for cleaning the entire shower enclosure and everything in it from the faucet to the tiles.
Briefly, here's how I do it weekly:
1. With your medical face mask on (yes I definitely recommend this to prevent inhaling the solution's vapour) and gloves, spray the entire enclosure with Potz decalcifying spray (See picture at right). Include all items with chrome finish - shower heads, knobs, faucet, soap dish, etc., the glass, and the tiles.
2. Spread the sprayed solution with a soaked sponge (sprayed in advance with the decalcifying solution). Spread to every part of the things you want cleaned.
3. Wash off the solution with lukewarm to cold water and let it dry-out by itself.