Chlorpyrifos is used in about 100 countries around the world to control insects in agricultural, residential, and commercial settings. Its use in residential applications is restricted in multiple countries. According to Dow, chlorpyrifos is registered for use in nearly 100 countries and is annually applied to approximately 8.5 million crop acres. The crops with the most use include cotton, corn, almonds, and fruit trees, including oranges, bananas, and apples. Use of Chlorpyrifos is not recommended on tomato crops, as it kills the whole plant within two days.