Methyl paraben is a widely used compound naturally found in blueberries. It has a variety of antifungal and antimicrobial effects that have been used to help prevent spoilage in consumables since the early 1900s.

Make your own fruit fly media? This mold inhibitor will prevent mold from developing in your fruit fly media—it's what we use at Josh's Frogs in our world famous fruit fly media. Just add 4 teaspoons of methyl paraben to 10 cups of your media. No need to use vinegar anymore!

1 pound of methyl paraben is enough to make 360 cups of mold-free fruit fly media, or 720 half-cup cultures! Methyl paraben is cheaper than using vinegar, doesn't cause your culture to dry out like vinegar does, and is odorless!

Methyl paraben is also used in several widely used beauty products and cosmetics (at a rate of 0.01% to 0.3%), as well as a food preservative (up to 0.1%).

WARNING: This product can expose you to a chemical (methanol), which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.