Deja-vue. I was watching This Old House on Roku yesterday, and they were rebuilding a home in Dorchester MA that had some fire damage to it. They brought in a company to get rid of the lightly charred wood and soot. The guy points the nozzle at the black wood and presto, it becomes brand new looking wood. The dry ice is 100 below zero and about the size of grains of white rice. It came out of the gun at 1000 MPH.
They had to use a large fan to suck the air out where they were working as it instantly turned into a black fog as soon as the dry ice hit the wood. Of course being dry ice, they evaporate into carbon dioxide so the only"mess" is what you are removing.
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