Beneficial insect, feeds on thrips. in.Neoseiulus (=Amblyseius) in. cucumeris. This very tiny (less than 0.5 mm long), tan colored mite attacks the immature western flower and onion thrips. When thrips populations decrease this predator will stay alive by eating pollen, leaf surface fungi, and spider mite nymphs. Prefers high humidity. Most pesticides will kill Cucumeris. GREENHOUSE: Use 50-100 predators/plant every 1-2 weeks until % of leaves with predators equals % of leaves infested with thrips. Introduce late Feb.-Sept. as soon as thrips appear (when plants are small & thrips pop. low). Ship as 50,000 ***Must be shipped Next Day Air. California addresses will pay $40.00. All out of state addresses, we will need to call you with correct freight amount.***