Newly hatched slugs are also small and transparent making their presence easily overlooked. Because of this, slug eggs or young slugs can enter the garden on new plants or in soil materials. Even borrowed garden equipment can introduce slug eggs. Slugs, even though considered to be a slow mover, can move unaided from one garden to the next in an urban situation. Eggs, because of their size, can even be transferred on the bottom of footwear when crossing an infested area.
Slugs prefer warm, moist conditions.
With the onset of cooler weather, slugs will become less active or even dormant, but with the return of moist warm weather, slugs soon assume their active state. Slugs lay eggs in clusters of 200-300 eggs. Because of their capacity to reproduce in high numbers and the egg's ability to overwinter and withstand very harsh conditions even a small population can soon multiply. There are many cultural or environmentally friendly means of slug control. Inspect all incoming plants for eggs or adults and remove by hand.