Hi Lewis,
A lesson learnt the hard way. However I expect it to be learnt well.
On MSDS's, : Years ago I was working in the pest control industry. I introduced rodenticides into ceiling cavities.
I made the mistake of sometimes giving a copy of the MSDS to the customer. The customer with their infinite wisdom, knowledge and reading skills determine that the product was an explosive substance. "How dare you put an explosive in my ceiling?"
Just because the MSDS mentions the product's explosive properties (which is almost nil) the "highly intelligent" customer determines it is highly dangerous.
Also those customers did not own any telescopes.
But there were some astrology magazines about.
Cheers