The 6 oz. Stone Care: ETCH REMOVER / Marble Polishing Powder will repair on average 20 - 25 "typical" etch marks. A typical etch mark is a glass-ring, or small dull spot the size of your hand. Also, please note this product is for use on "polished" (shiny) marble, travertine, limestone or onyx. Not for use on any honed or tumbled finish.
However, there is no set or guaranteed area of coverage simply because that is not the way the product works and each etch mark is unique. Some can be more severe than others requiring repeated applications. There is simply no way to accurately gauge how many square feet let's say one bottle will cover. It will vary.
However, one bottle will typically last you quite a while now that you are aware of the issue and can be more proactive in preventing etch marks, which is done by preventing contact with acidic foods and drinks and using only marble-safe products made specifically for cleaning marble and natural stone.
Instructions:
An"etch mark" is caused by corrosives acids in foods and drinks and by harsh cleaners (which is most common household cleaners). Common problem.
Using the Etch Remover product is very simple and effective, although different than a "cleaner". It isn't just wipe on, wipe off. Be advised the powder is re-polishing the damaged area (much like sanding wood smooth), so the powder must be rubbed on the etch mark until it is restored. However, it's best to make several small/short applications using a new spoonful of powder each time until the shine and color are restored. This allows you to inspect for changes in between rounds.
You'll also need Stone Care: Granite & Marble Cleaning Spray (1 QT) to neutralize the powder and properly clean the stone after applying the powder to the etch mark. The cleaner is then used as a regular cleaner after the repair.
Here's how:
1. Sprinkle the powder on etch mark
2. Spray or sprinkle the powder with water
3. Rub in a circular fashion with a soft cloth
4. Sprinkle water on paste as is dries out
5. Paste will disperse as you use it, so after rubbing for 30 seconds or so, just wipe it all off
6. Clean area preferably with a neutral stone cleaner like the recommended Stone Care Cleaner
7. Inspect the spot, noting changes
8. Apply another drop, rub, water, rub, wipe off, clean
9. Repeat until you restore the shine and blend with the rest of the surface.
Again, restoring etch marks is a process of refinishing the surface. Kind of like sanding wood smooth. One etch mark may only need one application and other several. So, you continue to make repeated applications until you've completely restored the shine and color.
You'll find more information about this issue by using our Questions page as well.