I've heard that bleach attracts squirrels, and I don't know of a source for cheap hydrogen peroxide, so I'm planning to add Star San, a sanitizer used by brewers, to the water that I will use for flushing my tubes. After I pull each tap, I'll pump Star San solution directly into the taps and the attached tubes. Has anybody tried Star San -- or does anybody have a better solution for flushing tubes when you don't use vacuum?

