Found mold in your basement or behind the drywall after a leak? Don't mess around with bleach and a prayer. A certified remediation crew will actually test what kind of mold you're dealing with, contain the affected area so spores don't spread through your HVAC, and fix the moisture source so it doesn't come back in six months.
The difference between a good crew and a bad one: the bad ones spray, paint over it, and leave. A real remediation company does air quality testing before and after, uses negative air pressure containment, and gives you a clearance report you can show your insurance company or future buyer.
Look for IICRC-certified technicians and get at least two quotes. Jobs can run anywhere from $500 for a small bathroom fix to $10,000+ for crawl space or attic work. Red flag: anyone who quotes you over the phone without seeing the damage first.