What is the best way to get rid of mold and mildew

Due to Irma, the basement got flooded. The stairs are made of wood, block walls. Lots of wood down there. Also, there is a side porch that is dirt below and the porch which is enclose is constructed of wood. I have a couple of people telling me I should have used bleach, I chose to use vinegar and hydrogen peroxide mixture.

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