If we catch it early, and the carpet, padding, and subfloor are still structurally sound, VaPURE treatment can treat the mold in place. That means less waste, less disruption, and a faster return to a normal room.
If the water sat for a while, or the flooding involved storm surge or a sewer backup, the padding usually can't be saved, and sometimes the carpet can't either. We'll say so directly rather than treating carpet that's past the point where treatment makes sense. Padding is inexpensive to replace and hard to fully treat once it's saturated, so in most of those cases we recommend pulling and replacing it even if the carpet itself is salvageable.
The subfloor is the one we check most carefully, because plywood or OSB that's absorbed water can hold moisture long after the carpet is gone, and mold on an untreated subfloor keeps feeding whatever gets put back on top of it.