One of our favorite products, no payment being received from them, for our Las Vegas Maid Services, is CLR. You can buy this product at any of your favorite stores including Home Depot and Lowes. This product is extremely versatile, but use hand and eye protection when using. The many surfaces this product clean include;
Tubs
• Toilet bowls
• Sinks
• Glass
• Chrome
• Fiberglass • Stainless steel
• Coffee makers
• Humidifiers
• Dishwashers
• Washing machines
• Shower heads
Basically it is great at dissolving calcium and rust. In Las Vegas hard water is something we live with and deal with when cleaning.  One of the things you may not think of with CLR is cleaning the driveway, but with pressure washing it works great. I use a slightly different approach and use powder laundry detergent to soak up oil and fluids on my driveway, and then CLR and pressure washing later on to keep it clean.   Do not use it directly with oil, use an oil absorber, such as CLR Grease Magnet first.

When shopping for cleaning chemicals, our Las Vegas Maid Services, tries to be green, but CLR is a good addition for those tough cleaning  jobs.