How much money to fix an grease soaked vault floor from an grease reservoir?
Answers: Cat litter will soak up most of the oil.
There are powerful chemicals surrounded by gallon drums obtainable contained by motorcycle stores that are used to clean gunge sour motorcycles, I am sure it would be good for cleaning up the remains of the grease spill in your crypt.
You need to furnish more information. Wood floor, concrete, tile, linoleom? What kind of grease and how much of it was spilled? Is the entire floor soaked or lately a few square feet? No one can really make a contribution you a definitive answer without some details.