Looking for a safe and responsible way to discard used motor oil, an old bottle of weed killer, or your son’s 8th-grade science experiment gone awry? The good folks at Montgomery County make it easy to dispose of the bad stuff in your home through its annual hazardous household waste collection program. And the service is free for Montgomery County residents! Business and industrial wastes are not accepted. The next HHW collection (and the last collection in 2019!) will be held on Sunday, October 20, at the Lower Merion Transfer Station, 1300 North Woodbine Avenue, Penn Valley, from 9am to 3pm. Click here for lists of acceptable and unacceptable materials, and for additional program information.