The exhibition is about the Spanish slug Arion lusitanicus that has become common in the gardens of central and northern Europe. Many gardeners consider it to be the worst pest of all.

In the garden in Selfoss, there will be arranged a "high-security-flowerbed". A single cabbage or the like is hereby protected from slugs by use of beer-traps, as well as electric and ordinary slug-fences. The flowerbed is partially raised, with two or three height levels. Possibly, the cabbage is planted in a tiny greenhouse on top of the bed. Flyers are handed out, informing about the forthcoming slug-invasion and its fatal consequences for Iceland. Garden owners are asked to protect their gardens preventively.