i am a Realtor and we have people coming to our office to present their services all the time, and we had someone come in and tell us about a process they use to clean mold and odors, specifically smoke with machines using hydrogen peroxide.They are called Biosweep and I believe they operate nationally.

Some of them you may have seen on tv...My chemistry career is in the field of alternative energy research, mainly the production of hydrogen fuel from sunlight and water.

This type of drywall was produced with materials that emit toxic hydrogen sulphide gas and other sulphide gases," says a copy of one home inspection report obtained Canwest News Service on an affected Florida home where Chinese drywall was installed.

I used about everything that was suggested on the internet: Vinegar, Peroxide, baking soda, bleach, combination of peroxide and baking soda, mouth wash.

To remove the pet urine stains, I poured hydrogen peroxide directly on the stain, covered it with a hydrogen peroxide-soaked rag, and then covered that with plastic wrap and let everything sit overnight.

Then spray any affected area with hydrogen peroxide or bleach.

Dehumidifiers, bleach, and hydrogen peroxide, along with removing any porous materials will solve just about any mold issue.

Have you tired a peroxide and vinegar solution?  

If it is primarily the oil spots that you are concerned about you can use a detergent, as well as concrete cleaner, baking soda, or hydrogen peroxide to try to remove them. 

After considerable research I'm kicking off a program to do home hydrogen conversions.