Has anyone signed up to do the black bag demo?
What is that??
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Maybe this?
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JMO…money gimmick. But hey, go for it you want. 
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What do you mean?
LOL - in the video the air test resulted in IAQ 60 times higher than excellent air.
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Anyone remember the episode of “All In The Family” when some door-to-door salesman used a photographer’s light meter as a scam prop to sell aluminum siding?
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I just noticed the link. It’s terrible video. I could only see the first video. The additional videos require a login
Require a login, like pay the GRIFTER money?
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Dunno.
One would think that someone wanting answers to a question, would post all the pertinent information related to the question being asked.
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Is this the same guy in the video? Or maybe this is his Dad? 
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IMHO
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We just set up an inexpensive air monitor while we’re inspecting, take a screen shot of the results and note if anything is out of line.