When a job needs to be done and something in the house needs to be fixed it's time to call a professional. You can't just call anyone. You want to make sure they have years of experience and have earned a badge of respect in their trade. If a plumber shows up at your house and they don't show you some plumber's crack within the first 30 seconds of starting job, it's time to ask them to leave. Clearly, they have not earned their professional license.