My children left a hose attached to an outside faucet during the winter. Of course this caused the frost proof faucet to freeze and burst which resulted in a flood in my dining room. I accessed and fixed the faucet, removed the wet insulation, and placed a dehumidifier at the opening to dry everything out. Now, what should I do to kill any mildew and prevent its growth? My first thought was to spray a bleach solution inside the wall cavity, but I kinda remember hearing somewhere that this was not a good idea.