These nasty pests attack grass roots, creating unsightly yellow patches on lawns. Apply to moist lawns during August and early October (whenever the soil temperature is above approximately 12°C/54°F). PLEASE NOTE: If you treat your lawn during August it is suggested the lawn is treated again in September. Two pack sizes available: 100m², 500m². Pack contains a living organism and should be kept refrigerated on arrival, and used before the expiry date, approximately 3 to 4 weeks from date of despatch. Please note - this Biological Pest Control product will only be delivered shortly before or during the stated application periods. Please allow 7-10 days for delivery. Please note: We regret that this item is not available to customers living in Eire.