ARBICO Organics NemAttack Pro Steinernema Feltiae (Sf) Beneficial Nematodes, Pack of 250 MillionOMRI Listed. Excellent choice for control of mobile pests that include fungus gnats, ticks, thrips, leafminers, caterpillars, cutworms, sod webworms, onion maggots, subterranean termites and more. This item ships FREE. Units of 10 50 Million ship 2nd day Mon Thurs with a 2 3 Business day process time. Units of 250 Million and up ship via Overnight methods on Tuesdays Only with MINIMUM 7 day processing prior to shipment. ARBICO Organics line of