You must have one of those fancy paved driveways or even fancier paved garages. In Texas we use the used oil to kill fire ants...............just kidding so please no hate mail from any save the whale wienies. I do all my own maintenance except for oil changes. Call me lazy, but for 19 bucks a toyota guy can get dirt in his eyes, oil down his armpit, and I don't have to dispose of the used oil. It is a job that can be followed up very easy when they are done, plus I stay very busy with work and keeping all the other crap I have around here maintained.