I don't believe in killing anything in the garden - after all, they are all God's creatures and deserve a chance at life. I try to buy plants that slugs and snails don't like, however, I did make a mistake this year, when I planted some sunflower seeds that a friend had given me and grew some magnificent sunflowers in small pots in the dining-room and then planted them out in the garden in troughs and bigger pots. That was when I discovered that slugs and snails adore sunflowers! They still had nice flowers, but the leaves all got eaten, which made them look rather pathetic. I won't be growing those again.
I go round the garden and, wearing gardening gloves, gather up any slugs or snails I come across and put them on the patio outside the back door, where there are only geraniums, fuchsias and box balls growing, which snails don't like. I buy iceberg lettuces, which they do like and tear up a couple of leaves from those every evening and throw them outside the back door for the molluscs. They love iceberg and soon know when to come out for their evening meal. (Molluscs sleep in the day-time.)
If I leave it a bit late, they are all queuing up outside. they have good little brains in their slimy little heads and I have got quite fond of them!
When they have finished the bits of iceberg (probably any lettuce would do) they crawl back underneath the plant troughs or attach themselves to the plant pots to sleep it off until the next evening, when they come out for their next meal!
I never have any problems with them eating my plants, what with keeping the molluscs well-fed and not buying plants they like and it's much kinder than killing them and perhaps killing the other creatures that eat them if you have used slug pellets. Why not try it!
I might add that I told Monty Don about this at a flower show and I now notice that he is recommending that we shouldn't kill slugs and snails, as they have their part to play in the great scheme of things. We had a hedgehog outside our back door last week, presumably having a feast on some nice well-fed slugs. - all part of the food chain. What would hedgehogs and frogs eat if we kill off all their food? Hedgehogs are endangered and I put this down to them eating slugs which have eaten poisonous slug pellets.