Dale might remember, but he's thinking of other things at this time!
Ah, Javelle water. Basically liquid bleach, a solution of sodium or potassium hypochlorite and water. It was originally made near the French town of Javelle (now part of Paris. Now, when I was a kid growing up outside of Phila. everyone (in my neighborhood) bought their bleach from the Javelle water man. I think this was most common in the NE USA.
Let's see, you had a bread man, a milkman a mailman and a Javelle water man.
Sometimes the milkman would leave a quart of chocolate milk for free just as a teaser. Boy, that wouldn't last long. But the milkman stopped more than once a week. I think we drank more milk back then. You know, the kind with the cream at the top.
I almost forgot. The mailman delivered the mail two times a day. Did we really make progress?