Stabill 360 in the boat and startron  in the atv never had a problem.

Stabil Marine 360 and Sea Foam is what I use , 

I use Startron currently.  Used seafoam for years too.

Agree, seafoam is the best thing a guy can do to keep ethanol problems at bay…

Looks like they offer a 3 step treatment system for your fuel, step 1 for each tank as a preventative measure, step 2 to use maybe once a year or if you have a developing problem and step 3 for storage at the end of the season. The Quick Care looks to provide all 3 steps in one treatment similar to what SeaFoam fuel treatment does. I have used SeaFoam for many years in small engines and haven’t had fuel related issues since. 

my mercury guy told me to use the quikcare, contains no alcohol,  I put 1/2 ounce per 6 gallons o. the tank.