Undisturbed asbestos is not dangerous in itself.  

Turned out that he had four in the Tampa area and they were all in danger of Foreclosure.

DEFECTS: Seller warrants subject property to be free from hazardous substances and from violation of any zoning, environmental, building, health or other governmental codes or ordinances.

I see some comments here that are dangerous.

These are all examples of things that were or are morally acceptable while being illegal, When you listen to your morals more than the laws it seems a lot more dangerous to me.I'll take the situation where anything legal is moral over that any day.

After one removes the drywall and air dries the wood frame, what substance do you spray on wood frame, floors, etc. to prevent mold and kill other nasty things?

That can get dangerous unless you have a deal that is a guaranteed easy seller, only needs lipstick so your rehab is 3-4 weeks MAX, and you keep your resale costs and any loan costs down.

This is dangerous because the seller has an incentive to minimize expenses in order to make the investment look as attractive as possible in order to get it sold; the real estate agent stands to earn a fat commission check.

I think it's dangerous to blindly follow any party, as they are only SUPPOSED to be a vehicle for a set of beliefs.

I've mostly seen people work with flips to get some cash together and get into their rental business.Seller financing can be a godsend in many cases, even if you end up paying a little more, it keeps you from relying on a bank, which is dangerous unless you have a good relationship with a local bank, especially in today's financing climate.As much as I hate flipping single-family houses and duplexes, a few flips can give you enough money to exchange into a property that you want to hold.