I was told that a natural way to get rid of slugs is placing a dish (deep enough) filled with beer, in the area where you have seen the slugs, best time at night because they are nocturnal. Slugs are attracted by the smell of the beer and get into the dish and can't get out and died. Also get rid of them manually. Any time you see one, pull it away from the plant and sprinkle salt on top of them ant this will kill them.

I feel bad doing this but they are a pest that cause a lot of damage to the plants.

Use an iron phosphate product like Sluggo or Escar-Go! to get rid of them. Ingesting it makes them stop eating; they then crawl away and die somewhere else. Iron phosphate breaks down into two elements that are good for your plants and is safe around birds, pets, and children. The granules will survive several waterings before they need to be reapplied.

They also hate caffeine, so using coffee grounds or watering with stale leftover coffee will repel them.

After you have gotten rid of most of them, release killer snails to prey on any babies that hatch later.

Philip