mold behind drywall near plumbing 69

https://moldbehinddrywallplumbingnotes.brightsora.com/posts/how-to-spot-mold-behind-drywall-near-plumbing-in-a-rental-home

You notice a musty smell near the bathroom wall and when you peek behind the baseboard, there's a patch of black mold spreading on the drywall around the copper pipe. The plumbing leak must have been slow, just enough to keep the wood damp but not enough to cause a visible stain on the paint. Now you're looking at cutting out a square of drywall, replacing the moldy insulation, and fixing the drip before it rots the studs.