“Right now, there are no disinfectant products registered by the U.S. Environmental Protection Agency for use on environmental surfaces that are specifically listed as having the ability to kill the SARS virus. However, similar viruses can be killed with bleach, ammonia or alcohol, or cleaning agents containing any of these disinfectants. Cleaning agents should be used according to the manufacturer’s instructions.”
http://www.idph.state.il.us/public/hb/hbsars.htm
Regarding the use of bleach for a disinfectant: Table G.1Sodium hypochlorite: concentration and use
Personally, I would increase the strength for better effectiveness. The recommended mix is one part bleach to 49 parts water to clean surfaces if infected by bodily fluid. This ratio is for bleach with 5.25% sodium hypochlorite. If your bleach is a different concentration, follow below.
Make adjustments to the amount of bleach added if its concentration of sodium hypochlorite is above or below 5.25%. Calculation: Multiplier of the amount of bleach added = 5.25 concentration of sodium hypochlorite in bleach For example, when diluting a bleach containing only 5% sodium hypochlorite, the multiplier is 5.25 5=1.05. That means 10 x 1.05 =10.5ml of bleach should be used when preparing a bleach solution.
Also keep in mind:
Sodium hypochlorite decomposes with time. To ensure its effectiveness, it is advised to purchase recently produced bleach and avoid over-stocking. For effective disinfection, diluted bleach should be used within 24 hours after preparation as decomposition increases with time if left unused.