I'd like to get in on the one-upmanship here. My father, who is a chemical engineer, worked for the EPA for over thirty years!
I just had a chat with him to make sure and YES of course bleach kills all mold it touches! That does not mean it's best to use it.
It's dangerous for people to use, and all the other mold killers are also. They are all 'related' to regular household bleach (as Greg Sharp said).
This a case where ignorance and fear allow some hucksters to come in with either a product or service and charge more than needed.
From my reading of the EPA brochure, they are stating that bleach is not necessary to use (because it is bad for people).
I'll beat a dead horse:
1. Remove all porous materials that have mold- drywall, insulation, carpet, rotten wood, etc.
2. Fix the moisture problem!
3. Clean the hard surfaces that are left. EPA says use protective gear while you scrub with mild detergent mix (like dish soap and water). CONTROVERSY: Some people say use household bleach, some to use a specialty name brand product.
4. Let dry and repair- make sure that moisture problem is really fixed!
Molds are a part of nature, and are always floating around the air in very small, harmless quantities. (my father could quote the parts per million or billion). Don't give them a place to reproduce and get out of control.