Been using Wipe Out for the past couple of years. I now clean my barrels with an initial pass of Hoppes Elite, a patch, then apply the Wipe Out. I usually let it sit overnite before running a patch thru the barrel. Usually one treatment does the trick, but it varies from gun to gun.
I no longer use brushes of any kind, and always use a bore guide. Better accuracy and longer barrel life due to not scrubbing the dickens out of them with excessive bore brushing, are the upsides of using Wipe Out, imo.