Control fungal diseases in your garden with Fung-onil Multi-Purpose Fungicide from Bonide! The active ingredient, chlorothalonil, is an effective ingredient in preventing a variety of fungal diseases that are common in plants. This broad-spectrum fungicide is effective in the control and prevention of many garden diseases including leaf spot, rust, blight, rot, mildew scab, mold and more. Protect plants in your garden with this fungicide. Fung-onil Ready-to-Use Fungicide can be applied to a variety of types of plants, including fruits, vegetables, beans, trees, flowers and shrubs. This solution arrives conveniently ready-to-use in a trigger sprayer bottle. To use, shake well and apply to affected plants. For full use instructions, please see product label.