I found this video pretty interesting. If you don't know, this is the same guy that 'invented' the mainstream R-Hop patch.     Now I'd always taken it that alcohol cleaned better because of its solvent properties (video seems to confirm this), but to see this it looks like I'll be doing a final run of the inside of my barrels with silicone again as it seems to make them stay cleaner longer.   That said though, it does look like when he wipes the areas at the end that they clean at the