H2o and gas

My son-in-law does it all the time for his lawn equipment and chain saws. Where he lives the humidity is so high gas goes bad in just a few weeks. If he doesn't use gas with no alcohol he has to clean the white gel out of the carbs, fuel lines and tanks on a regular basis. He just puts the gas in a clear jug, adds some water, shakes up the mix well and lets it settle for a few days. Then he siphons the gas off the top and if he is careful he can get it accurately on the parting line. Then he pours the water/alcohol onto an un-used driveway and lights the alcohol and burns it off the top of the water. Has worked well for him for a couple of years.