Your obviously a man of science (we all are) get a jet washer and a snorkle lift i would quote to cover three days of cleaning, do a deal on the hire (heaps around at the moment) experiment and use your cleaning knowledge,,,or run ultrapac through the machine on a high heat,,, da da oh and call your insurance comp for your house and find out how much they will alllow for fire clean up,,,we charge insurance comps £70/person/hour