The District of Columbia gives each household a couple of large-item pickups every year. (Large item example--old storm windows, say 4 feet by 2.5.) Latex paint, as someone remarks, can be allowed to dry out and dumped with regular garbage. The Fort Totten transfer station accepts nastier stuff--solvents, oil-based paint, electronics--one Saturday every month. And with Goodwill on South Dakota Ave. NE and Community Forklift in Hyattsville one can get get rid of pretty much anything still usable.