I'm trying used coffee grounds and some other stinky or dry stuff like lavender they (supposedly) don't like around the plants I can't cover up well. But the most effective strategy - by far - has been my weeding tool. I go around and simply split all slugs I see in half and do it every day and especially when it rains. Others around me are drowning in snails this spring - I have very little in comparison. Another thing I do is to collect all large snails (Weinbergschnecken) and put them out in strategic places where slugs lay their eggs. Snails eat their eggs. Or so the AI tells me 😅