Through various sources , I have about 20 gallons of old E10 ethanol mix here at the house that I do not want to run in my outboards. So what other uses have we found for this stuff? I have read about grass/weed killing, and getting rid of fire ants. [not a problem here in the northeast] but I was wondering about putting it through a water separating filter then mixing it with some fresh fuel , using it in the lawnmower, chainsaw, weed-beater, whatever. Any other Ideas ? At the price of fuel these days, I hate to just dump it, but perhaps that is the best option .