Pete, thanks for stressing that, it's a very good point. The only time I have seen heat used is with VERY localised stings from bees etc. and it was very localised heat. If the venom has become systemic, icreasing the circulation could be a really bad thing. It would also make it harder to treat with HVDC, where a localised reaction is a must. I must agree with you DO NOT USE HEAT ON A SNAKE BITE <img src="/images/graemlins/shocked.gif" alt="" />
Macgyver.