My husband is obsessive about getting cardboard boxes out of the house asap. He feels it brings in roaches.
After having family work in property management for many years I am still shocked at how many people want to try to get something for nothing. Mold can be caused by a leak in the pipe but also can be caused by poor housekeeping.
One issue with even trying to be helpful is that there is no knowing what other issues come up once the drywall or tile is removed. It could quickly escalate to $$$.