Personal Protective Equipment (PPE) that you should use when cleaning out a flooded home or when doing construction in a previously flooded home:
Muck and Gut
Eye protection (goggles MUCH preferred over glasses)
Nitrile gloves UNDER leather work gloves
Respirator (mask rated N95 or canister respirator NIOSH certified)
Eye protection (glasses could be substituted for goggles, though goggles still provide better protection)
Leather work gloves
We also recommend N95 masks, long sleeves and long pants, though not required.
Volunteers will be in homes that have been flooded and mold could still be present, even if not seen. Driving nails, etc. into studs could release mold spores into air. It's always better to be safe than sorry.