Try Star Tron Enyzme fuel stabilizer. It seems to work the best. I have tried them all. I would suggest only buying gasoline one gallon at a time. Also, buy super unleaded instead of regular. Lastly, if you have a machine that does not get used every week(like a brush trimmer)empty the fuel out. Never leave fuel in the tank in the off season. You will definetly plug you jets. Ethanol will also dissolve the rubber fuel lines.
I use the Sta-bil Marine in the blue bottle.
“Never leave fuel in the tank in the off season”
Most of which gets dumped on the ground in the name of saving the environment. It’s a grand scheme.