I used to use it along fence lines to keep weeds down. And kill fire ants. Today I just give it over the parts store. Since I don't have another use for it (and couldn't "generate" enough to feed a heater; and no need to "paint" equipment in the sun belt) recycle is easy enough.
Of course, you could always re-purpose some old burner like the gasoline-fired passenger car heaters of the 1950's to warm your engine coolant faster, DD.