More plainly the CLP will continue to pull carbon fouling out of the barrel until there isn't any more. Sounds great in theory, in practice, with an old gun, you could clean it every week for a year and the CLP will still pull fouling out of the steel.
I don't really see any downside to a gun barrel cleaning product that continues to clean out carbon fouling until none remains. In fact, one of the big fears with older vintage guns that may have pitted barrels is that even aggressive cleaning and scrubbing may not get all of the accumulated fouling and residue out of the bottom of the pits. Pits usually aren't as deep as they look, but nobody wants them to get any worse.
I've used a military surplus CLP and a couple commercial CLP products, and never had any issue with them creeping into the wood or anyplace they didn't belong. I still have a bunch of Breakfree CLP from years ago when the local Big Lots Store had it for 19 cents a can. Wicking or capillary action is essential for any penetrating oil to be really effective. And any light thin lubricant will creep downhill due to something called gravity. The trick is to not use an excessive amount.
