unless you are experiencing serious, if not consistent phase separation for ethanol-blended gasoline (meaning that gasoline and ethanol separated), otherwise, all you need to do is to dope your gasoline jerrycan with sta-bil or marine stab-il and consider using it up as quickly as possible.
*trick to dealing with E10 gas used in OPE (including 2cyl)*:
Buy/store just enough gas to be used up within a month's time. Dope it with sta-bil or marine sta-bil if you have fears of accelerated deterioration or phase separation of gas.
Run your engine dry before winter storge. In the case where you can afford/knowledgeable enough to do winterization, by all means, drain the carb bowl/fog the engine.
No need to get too hyped up on these useless otc market out there. for most of them feeds of fUD and are basically useless in nature.
Q. (been living in E10 country for over 2 decades, no issues at all).