Allowing that purchase and then mixing of resin and hardener in the correct proportions leaves little if any unused, what is the best way to dispose of whatever is left? I imagine mixing it up and letting it cure (such that it is rendered inert) before disposing of it would be ideal. Locally (to me) there are hazerdous waste collection days once or twice a year to collect and properly dispose of paints and varnishes, pesticides, pharmaceuticals and other household chemicals that would are potentially toxic if added to the landfill. I'm moving after seventeen years so the topic has been on my mind as I rid myself of an accumulation of unused stuff.