I work for a company wo sells multi carrier shipping systems , inclusive in that is haz mat shipping automation. I personaly have all the training and certification for everything short of fissinable material.
One thing I want to stress , is FOLLOW the rules .

Now for a funny story
one of my clients is a defence contractor , and we were trying to get an exemption to fly some squibs for the explosive bolts that hold a jet fighters canopy on . now you could probally put theese things up your nose and pop them with no harm. ( they make great ematches)Additionally the paperwork out weighed the product. the problem was they were classed as high explosive iniators .
After a really long discussion with like the 2nd in command of fedex haz , and explaining how silly it was to disallow airplane parts on an airplane , and that there was a jet in Saudi Araiba sort of sitting usless he cleared them as accessable cargo .
for a mere 287 bucks 3 ish ounces of squibs got there .