Goal: How can I dispose of a lawn mower if I am scrapping it?

Which of the following methods is more reasonable for accomplishing this goal?
Many county recycling agencies recycle mowers at no charge to you. Check with the recycler to find out how to prepare your mower before dropping it off. At minimum you will need to drain the gas and oil from the engine. Put them in DOT approved containers and dispose of them at your local hazardous waste agency.