Besides being a fire hazard, latex paint is one of the more toxic substances found in almost every home you'll enter. If you decide to make a low-VOX purchase for your next room re-do (Remember when the wall was "salmon" and it was so, so horrible?), you can leave your old toxic latex paint in front of your home and call (415) 355-3777 to schedule a pick-up. No need to even be there, and it's completely free. For other paint collection/drop-off services in San Francisco, visit http://www.sfenvironment.com/directories/paint.htm.