Household hazardous waste disposal is available in Marion County at the Salem/Keizer transfer Station located on Deer Park Dr. SE, just east of the state Corrections on Highway 22 east. This is the place to dispose of leftover oil-based paints, thinners, used motor oil, etc. if your local trash collector doesn't provide the service. There is no fee. You enter the drive-through, pop the trunk and they take care of it. These kinds of products should never be dumped down a storm drain or in open ditch, or flushed, or put out with the regular trash that ends up in a land fill. Proper disposal--it's a good thing!