Sea Foam is legendary in the small engine world, and for good reason.
Bumped into a guy recently who rebuilt a '72 Norton Commando about 6 years back. Runs SeaFoam pretty much all the time in that since those carbs are notorious and a PITA to clean - 5 seasons of use, hasn't had to service the carb.
If someone has a regional fuel formulation that doesn't crud up, be thankful - most of us aren't that lucky.
After local problems with E10, I buy only non-E gas here for small engine use. I always dose my cans with Stabil, and most of my small engines get a Seafoam dose at least 1 or 2 times a year.
I use it for cleaning action, but Seafoam is also useful for stabilizing stored fuel.
Rgds, D.