Torula yeast food attractant is ideal for the olive fruit fly,Bactrocera oleae and spotted wing drosophila, Drosophila suzukii. How to Use: 3 pellets for approximately 1 to 1.5 liters of water. Field life: 4 to 8 weeks depending on environmental conditions. May require water replenishment due to evaporation. Shelf life: 2 years if refrigerated. For short term storage of less than 2 months, store in cool indoor area. For long term storage of more than 2 months, store in refrigerator. Storage information: Store in provided container in a cool, dry area. Instructions: Species specific instruction sheet included. Insect traps are sold separately.