There is a significant amount of debris created when removing/replacing tile and grout. My biggest concern when dealing with a tile repair is how to contain the mess.  Depending on the situation, it can require a lot of preparation or none at all.  For this exterior work above the amount of containment required was minimal, but for an interior project like this I would need to use plastic to block off surrounding rooms, floor protection, furniture moves, etc.

Loose, cracked or worn tile and grout can easily be repaired with minimal inconvenience if the proper precautions are made (and if a spare tile or two are available).