The slug parasite Phasmarhabditis Herma-Phrodita is a natural occuring soil organism. It is now possible to breed the parasite and it is available under the trade name Nemaslug. Due to its introduction into the soil in huge numbers it can cope with high slug populations. Once attacked by the parasite slugs stop feeding within 7 days and die. Dissolve in water and apply by watering can to the area which needs protection from slugs. Moist conditions are required for the nematodes to move in the soil. The parasites are active for at least 8 - 10 weeks.