Hi everyone!Don't know if this is the right sub to post this but today I was cleaning our kitchen floor and noticed these tiny holes, they seem to be on several random tiles.Does anyone know what this could be, and is there something we can do about it?I don't know what the tiles are made of: https://ift.tt/2vXmjNL via /r/DIY https://ift.tt/2nUt7Hf
