HELP NEEDED!!! Cat filled house - Cat urine removal ceramic tile

[Casey Hunt]

All, I bought a house that has had cats living in it for a while with no owner. I was told about 25 cats. so you can imagine what the house looks and smells like. the entire house has ceramic tile. I assume the tile is ok but the grout has probably absorbed a majority of the smell. Is there a way to clean this to the point of no smell? Will I have to remove all tile, if so, what's the best way to remove it. Any help would be greatly appreciated.