For lead removal I use mercury..no I don't play in it..don't heat it etc etc. It really isn't dangerous to use. It actually does a vey good job. I also have a Foul out and it works very well on copper. I used the lead remover on the foul out on a couple of shotguns... and have never had a rusted or pitted bore from any of the chemicals. I had so much lead in the choke area of 2 Win M-12 Pigeon grades that they shot full choke patterns out of a skeet bore 12 and a 20. Foul out took it right out.