Cabbage White Caterpillars can decimate veg especially brassicas Gooseberry Sawflies strip the leaves of fruit bushes and Codling Moth Caterpillars burrow into the fruit of apples and pears in summer. To kill caterpillars apply as soon as they are first seen from spring to autumn; to kill Codling Moths apply to/around trees September-October.Pack contains 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.)