I need a carboy cleaner because I haven't had much luck with using a brush.
A couple problems I have had:
1. I have dropped a GLASS carboy when trying to pick it up and swirl it around to loosen the gunk.
2. I chipped the rim of my carboy with the brush.
3. I am always afraid I'm going to scratch the inside of my carboys with my brush.
I need a carboy cleaner so that I can make YouTube videos showing how well they work. Plus, beer makes me lazy & without a carboy cleaner, I'm never satisfied with my end results using any other method.