As for oil tanks those can be costly and challenging if they are leaking as the soil conservation must get involved.

Like a oil town or Detroit with the automakers

It collects oils and stains like a sponge. 

It's the difference between investing in crude oil and olive oil, totally different ways of looking at things.

If the smell is really bad and there's a chance of pet urine or other really strong odors, when you paint consider using a shellac (oil-based) primer first, at least on the floors (before re-carpeting) and up part of the walls.We bought our current home from someone who let their cats "go" wherever they wanted (it was nasty).  

Have you tried the peppermint oil, Dave?

Definitely open up the oil pipelines and drilling leases so we aren’t sending money to morally wrong countries.

I’ve also spoken to dozens of heart broken OOS and OOC investors both on the phone and in person who were taken by snake oil turnkey providers even offering “guaranteed returns”.

Snowbound oil on trim, cabinets and doors.  50% Repose Grey on walls.

Bleach will get it, then use an oil based primer before repainting