PBW (Powder Brewery Wash) is a safe alkaline cleaner for everything around your brewhouse.
It’s a favorite of small home breweries because it out-performs caustic chemicals without scrubbing. Just put your kettle, bottles, carboy, etc. in for a good long soak.

Even a better deal in bulk quantity. Comes in a bottle with a screw-top lid.

Please be careful when you use PBW in enclosed equipment. When you mix hot water and PBW in an air or water-tight space, it will create pressure.