I have never used lime for blasting , but if I remember right it is able to eat away at your skin if left in place. Sounds nasty I would just throw it out. With the smoke damage, do you pretty much hit everything that is exposed to get rid of smell or black carbonized wood. I'd like to get some of that work too so I advertised in a directory which is for insurance agents. How much soda did you find it took to do an average wall?