When to Remove Moldy Carpet and Padding Instead of Cleaning

https://mildewwatch.meridiannest.com/posts/when-to-remove-moldy-carpet-and-padding-instead-of-cleaning

You might think a good scrubbing can save a moldy carpet, but if the padding underneath is soaked or the mold has spread deep into the fibers, it's time to rip it all out. Mold in padding or underlayment can't be fully cleaned—it acts like a sponge, trapping spores and moisture. Cutting out the whole section prevents health risks and stops the rot from spreading to your subfloor.