(Sorry for the posting, but I got an error when I tried to PM you).
Yikes Robert! Maybe you wish to reconsider your previous post to a public forum (if not delete it altogether).
Whether we like the TSA rules or not, there are civil and potentially criminal referrals for carrying flammables or explosive precursors in checked baggage, not to mention inherent safety issue.
Esbit tablets are made of Hexamine, a precursor for RDX.
Detection for this is coming to an airport near everyone in the US shortly. I saw a demo in May of the new X-Ray machines that are currently in about 90 major airports and scheduled to be most in the next couple of years. They can automatically detect explosives and precursors, and identify their position in the baggage. The demo I saw detected an amount much smaller than a single esbit tablet.
Besides the overt safety hazard, it could cost someone a few bucks, plus get themselves on the 'body cavity' search list for future flights.
While I'm sure there was no malice intended, and with all due respect, this is really bad advice that I hope no one follows.
Just my 2 cents worth.