The carpet must have several unique stains, because usually all it takes is a few washes with our carpet cleaner to get it done.

Once you figure out what your goals for real estate investing are going to be then the path becomes a lot cleaner.

I think ozone will be your best treatment, however you may need to hire someone that has commercial grade ozone equipment.If I were to do it over again I would ozone, spray probiotic cleaners and let sit for several days.

It has lot of oil stains on the garage floor and smells like solvents.I tried a couple of cleaners with a pressure washer, and they had little effect.

Those you can leave few at dry cleaners, auto repair shops, hair salons etc.With the exception of contacting FSBO And for rents, when you're doing free to low budget marketing it's mostly letting people know you're out there and what you do and essentially waiting for the phone to ring.

It's much cleaner to actually purchase the properties, do whatever updates/repairs are determined necessary, and then resell them.

To me, it's just way cleaner to keep friends or friends of friends out of it.

Provide excellent property, elegant design, quality service, cleaner than their own home. 

I'm simply echoing @Joel Owens here but Nail Salons, Hair salons, Dry Cleaners, Liquor Stores, Subway sandwiches and similar.

Also the tenants living habits should be a cleaner environment both inside and outside thereby reducing cleanup costs vs. the first property.