Yellowed limestone from salt and baking soda Images
Yellowed limestone from salt and baking soda Description
Help! I tried to clean some unsealed limetone (on a fireplace hearth) with salt and (http://maplered.com) baking soda. Now I have ugly yellow stains on the stne from the salt and (http://maplered.com) soda. Is there anything I can do to get those stains out?