http://www.uq.edu.au/ohs/pdfs/Liquid...enguidance.pdf
please archive
please Read
if you're lazy....
LN2 vaporizes....and will take up the oxygen inside your house. store it in your porch. not inside...
don't cold burn your hands and feet use sandals so your foot won't hurt benching...
don't use on pets
**suggestion of usage....freeze locks..and brake into private properties...what you do there...im not liable for/to