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Ethan Brown——Works at the United Nations High Commissioner for Refugees (UNHCR), Lives in Geneva, Switzerland.
Cleaning Process:Mix 1/8 cup of Trisodium Phosphate (TSP) in 1 gallon of hot water.Apply to the brick using a paint brush or soft sponge. Do not use the bristle brush to avoid spattering the TSP solution.Rinse completely with warm water.Repeat if soot or greasy stains remain.
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