What’s the best method for cleaning flood-damaged property?
Walls, hard-surfaced floors, and many other household surfaces should be cleaned with soap and water and disinfected with a solution of 1 cup of bleach to five gallons of water.

Wash all linens and clothing in hot water, or dry clean them. Flood soaked furnishings such as upholstered couches, chairs or carpeting should be discarded. Remove and discard contaminated household materials that cannot be disinfected, such as wall coverings, cloth, rugs, and drywall.

If there has been a backflow of sewage into the house, wear rubber boots and waterproof gloves during cleanup.

Mold may be present in homes that were flooded. An air conditioner or dehumidifier may be used to lower the level of humidity to prevent mold growth. When cleaning up small areas affected by mold, make sure the area has enough air by opening doors or windows. Use protective glasses or goggles, rubber boots and waterproof gloves. Wash clothing afterwards. If there is heavy mold growth, use a respirator or suitable mask to prevent breathing the mold

– See more at: http://www.nkyhealth.org/Fact-Sheets/Flooding.aspx#cleaning