http://livinglifeforce.tripod.com/mold.html

Laundry bleach is not an effective mold killing agent for wood-based
building materials and NOT EFFECTIVE in the mold remediation process. OSHA
is the first federal agency to announce a departure from the use of chlorine
bleach in mold remediation. In time, other federal, state and other public
safety agencies are expected to follow OSHA's lead. The public should be
aware, however, that a chlorine bleach solution IS an effective sanitizing
product that kills mold on hard non porous surfaces and neutralizes indoor
mold allergens that trigger allergies.