All these nematode controls contain naturally occurring and environmentally friendly nematodes. Use nematodes to safely control garden pests including slugs, vine weevils, chafer grubs, leatherjackets, lawn fleas, ants, carrot root fly, cabbage root fly, cutworms, onion fly, sciarid fly, caterpillars, gooseberry sawfly, thrips, and codling moth. Using Nemaslug and the Nemasys range of nematodes is easy and effective as well as being safe for children, pets, wildlife, birds and bees. All nematodes are perishable (they will keep for up to 2 weeks in the fridge once you receive them), so order them when you are ready to apply. Green Gardener is the biggest supplier of nematodes in the UK and because we have fresh deliveries of nematodes each week, you are guaranteed the freshest stock with the longest expiry date available. Our nematodes are dispatched DAILY by 1st class post and are very easy to use - simply mix with water and apply with a watering can, hose-end feeder or nematode applicator.