SlakkenSchrik™ is an environmentally friendly way to keep slugs away from plants. When they come into contact with copper, they feel a slight electric current. Copper rings: are pre-bent so you can place them easily. Copper tape: stick to patio pots to protect your precious plants. Can also be used on seed or flower beds or trees. *SlakkenSchrik™ is a product of KOpersporen. Copper: the genius discovery In ancient times, people already knew the power of copper. The application of copper for slug control in gardens is perhaps the greatest and simplest discovery of recent years. Snails cannot biologically resist the properties of copper. When touched, the snail literally feels a slight current stimulus and gets away. Millions of people in the USA, Australia and England already apply copper successfully.