Slugs and snails are known for their shiny slime trails, but they’re unlikely to go on the move if you make your garden uncomfortable to crawl around.
Scratchy, rough surfaces are particularly effective when placed around the stems of plants to stop from being eaten. Cruchsed egg shells or a sand-paper collar are best remdeies to keep pests away.
This won’t kill slugs, but it will slow them down.
According to research, slugs and snails “cannot tolerate” copper surfaces as it gives them a mild electrical shock when they crawl over it.
For this reason, copper bands or pennies placed around flowerpots or beds are effective ways to deter them from crawling up, and onto your plants.