SuffOil-X - 2.5 gal - 1SX25A24Certified Organic Pest and Disease Control Spray! Use to Kill Russet Mites, Powdery Mildew & More! SuffOil X suffocates and kills soft bodied insect pests in all life stages (eggs, larvae, nymphs and adults). It is also highly effective at preventing and controlling fungal diseases like rusts, mildews and Botrytis. As a fungicide, SuffOil X works as a suffocant and prevents pathogenic spores from attaching to the plant host. This prevents infection