well that would be the dago/mafia way to deal with it! did i tell you what xshub learned in talking to one of the RE or auction types up there when he was trying to decide what to do with it? One mafia type said that the method they used was to raise rats specifically for this purpose, dip them into gasoline and light them up and then set them free, they will go into every nook and cranny and crawlspace and the place will go up and at the end all they find is rat carcasses [guess they mostly used this in warehouses etc. where rats would be expected].
If you have it documented that there were squatters in there, it makes it even easier to make it look like one of them caught it on fire.
Rats? Thats crazy. Way too hard to control
Tampons,Gas, Laundry Detergent
The gas and detergent make ...basically, napalm...which sticks.
Then you need a staple gun, and burn said dwelling from the bottom, middle...up and out.