I gotta disagree on the canned stuff. Myself and several guys I know from landscapers to tree men. Have at one point or another opened a fresh can only to have "old gas" symptoms.
I do admit I have a can in the tool box just in case but non ethanol gas and quality pre mix are the way to go.
@Scsmith42 and several others advised me on here as well as many of the friends mentioned above.
Non ethanol plus quality premix oil is the way. If you know you won't be using that tool. Run the carb empty (drain tank, run machine til it dies) then if your gas has sat for a few months. Pour it into your vehicle and get fresh. Then you know you will never have to clear a gummed up carb.
Then as an aside. Read how much the premix oil bottle on hand mixes into. 1 gallon? 1.5? 2?
I only realized the last few years, many don't even notice to check... I'm a carpenter (one of 2) for a grading company with 40+ employees. So usually we aren't around them. But I noticed when I needed their 2 stroke stuff it was always iffy. Starting, running, etc. They killed stuff alot.
Then I got to noticing when we were on projects together. They'd dump the oil in and fill up the can.....
From dudes 50 years old to 18. I started asking them. Not may of those guys realized/cared about the ratio. Some oil cans are for 1 gallon mix, some are 2. Some pre mix jugs on hand are 1 gallon some are 2.5....
I pissed several off but after a while, getting them to pay attention filling up and only putting a gallon in the jug because the pre mix only mixes to a gallon made a huge difference in hard to start and burnt up tools.