I have understood by reading Kodak's website that used fixer was the most dangerous to pour down the drain. So I've always found some processing place to bring it and they could dispose of it in their more environmentally sensitive way. I'm willing to pay to do this, but with so many film places going bankrupt, the last big camera store in my area died not too long ago. Now I'm not sure what to do with my used black and white fixer. Anyone have any advice on what I can do to dispose of it in a way that doesn't destroy the pipes or the groundwater or whatever? Thanks. p.s. Kind of ironic thing is that I think the toxic part is the silver. You'd think someone would be interested in recycling that.