If you have a compatible cell phone I think I saw the endoscope cameras on Amazon. These plug into the phone and have a light as well as the camera. I agree with above an air quality specialist would probably be the best choice. Had to do this up north in a crawl space, ended up with a $6000+ clean up, negative pressure and moon suits...........
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Pennsylvania, for 60+ years, most recently, Allentown, now TV. 
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