Originally Posted by geoduck
Be responsible, and find a household hazardous waste facility. If my little podunk town in Cali has one, I'm sure most towns in ultra-progressive Finland have disposal facilities.
Yes, we do have them. One collection point is fairly close to where I live, and that is where I have taken the chemicals so far. There is a small amount of bureaucracy involved (fill in a form), and finding a suitable container can sometimes be a bit of a hassle. I don't own a car so I buy these types of chemicals once in a blue moon, know next to nothing about them, and have no empty cans lying around.
All these things combined I was tempted to try out some biodegradeable stuff for disposal at home, but never came to think about the fact the Right Reverend mentioned - even if the solvent is OK for the drainage system, the gunk from the drivetrain and other parts might not be. So even if I use a biodegradeable solvent, I'll continue to be a good scout and take the residual to the disposal facility.
Thank you all for the input!
--J