I have a few small pits (about 1/16 in diameter, very shallow into the tile) that have developed in some old ceramic tile in my foyer (it may be from some salt that was tracked into the foyer over the winter). Is there a good way to repair it?
I would try 'tile and grout sealer. These products are easy to apply and once dried are very hard. Go to your home supply store and look at a few different types and see what would work best for you application. Most people don't understand that tile needs to be sealed and re-sealed every year or two, especially in high traffic areas and where there will be a lot of dirt or water track across them.