HHS fact sheet:

Control of Pandemic Flu Virus on Environmental Surfaces in Homes and Public Places

http://www.pandemicflu.gov/plan/individual/panfacts.html

"This fact sheet explains how cleaning and disinfecting surfaces in homes and public places (like schools) can help to prevent the spread of pandemic influenza (flu). This fact sheet will be updated as needed. ... Clean and disinfect hard surfaces and items in homes and schools ... If disinfectants are not available, use a chlorine bleach solution made by adding 1 tablespoon of bleach to a quart (4 cups) of water; use a cloth to apply this to surfaces and let stand for 3 – 5 minutes before rinsing with clean water. (For a larger supply of disinfectant, add ¼ cup of bleach to a gallon [16 cups] of water.)" ...