Common Sense in the Household: A Manual of Practical Housewifery

by Marion Harland

Mildew

Is likewise obstinate. If anything will extract it, it is lemon-juice mixed with an equal weight of salt, powdered starch, and soft soap. Rub on thickly and lay upon the grass in the hot sun; renewing the application two or three times a day until the spot fades or comes out.

I have also used salt wet with tomato-juice, often renewed, laying the article stained upon the grass. Sometimes the stain was taken out, sometimes not.