Terracottoa Cleaning Tips- Remove Oil Stains
Terracotta is so porous and stains goes much deeper than the surface. Cleaning stains on Terracotta tiles are so tricky. If you want to remove oil stains from Terracotta tiles, you will need a poultice (an absorbent material) that is placed on the surface to draw out the stain. Here you will come to know about the steps to make your own poultice and draw the stain out of the tiles.
Source:http://www.howtocleanstuff.net/how-to-remove-oil-stains-from-terracotta/