According to Baltimore City Department of Public Works spokesman Robert Murrow, how you are supposed to dispose of paint depends on the type of paint. "Oil-based [paint] is hazardous waste, latex isn't," he says.
He suggests dumping latex paint, which is water-based, in the toilet. For oil-based paint, you have to wait for one of the city's household hazardous waste drop-off events. There are two each year, one in the spring and one in the fall. The next one is Oct. 28 and 29 at Baltimore Polytechnic Institute (1400 W. Cold Spring Lane). Along with paint you can also get rid of bleach, pesticides, herbicides, batteries, propane tanks, drain cleaner, gas, and pool chemicals. Just bring all your hazardous materials--no unmarked containers, please--and proof that you live in the city to the school, and the Department of Public Works will cart it away for you, presumably without exposing the kids to all that stuff that's too dangerous to throw in the trash.