Gateway Water & Mold 21
https://mymoldremediationstlouispress.novacrestiq.com/posts/how-we-handled-a-hidden-mold-problem-behind-drywall-in-a-st.-louis-rental-home
Gateway Water & Mold came by after that leak in the basement. They checked the drywall and found moisture behind the baseboards, then treated the area and set up dehumidifiers. The place smelled musty for a couple days, but the musty smell faded, and they said they'd come back to recheck the humidity levels in a few weeks.