It's the Clorox™ brand-name with a blue cap on the bottle. Clorox uses the caps to indicate specific sub-branding. The Blue Cap indicate pure bleach without any additives. No scents, etc. You really don't want any other chemicals added. We strongly don't recommend any other brand because we DON'T know what they have in them. The Clorox™ brand has stuck with this designation for years and is reliably chemically pure.
Thank you for the information and posting, Swordmaker. I have used peroxide with baking soda a few times a week. However, I will also add the newer recommendations!
What about diluted Hydrogen Peroxide?
Will hydrogen peroxide work instead of bleach? Many years ago an old dentist told me to use baking soda as a teeth cleaner and then rinse with hydrogen peroxide. He said tooth decay is caused by the acid produced when bacteria eat the substances on our teeth and the acid eats into the teeth. The baking soda neutralizes the acid and the HP3 kills the bacteria. Sounded like a win-win.