Malic acid is a common, naturally occurring ingredient in many foods. It is the main acid found in apples and other fruits. Most of its uses in pesticide formulations are as an inert ingredient, where it serves as a pH adjuster, buffering agent, and sequestrant. It is also used as an antimicrobial. While it has not records of safety concerns, malic acid is not permitted for use on food as a pesticide and there are no EPA-registered products. A national search did not discover any currently marketed commercial products.