This stuff really works! My favorite snack is non-fat yogurt with a handful of fresh raspberries. I have always bought the smallest carton of berries, and even then, I ended up tossing away the last of the berries because they got moldy. Now, I buy the large tray of berries, which cost less per pound, and even if a take a long time to use them, there is no mold! Now I don't have to take so many trips to the store.