Beneficial nematodes?

[Jelliclecats]

Could anyone with experience of using these recommend them? I’m West Coast of Scotland and our weather is adored by snails and slugs. It’s a lot of money if they don’t work though.
Thanks

Tried this in the war against slugs eating my delphiniums. Achieved nothing. Blackcats 0, Slugs 1

I live in south Wales, and when I moved in the garden was so infested with tiny slugs that any new plants and seedlings got eaten before they had a chance to grow.
I ordered nemaslug, and followed the instructions very carefully. (store in fridge, use before expiry date, mix with water to correct concentration, water evenly across the garden beds and containers, repeat regularly through the season).
They really worked. I still got the big black slugs visiting from neighbouring gardens, but those only look horrid, they mostly eat decaying vegetation, it's the tiny, grey voracious slugs that mostly hide under the ground and devour any tender growth that are the real problem and they were almost obliterated. I reorder the packets every year, it's the only way I can grow delphiniums and lettuces.
I also use the vine weevil nematodes every few years, after having vine weevil grubs destroy my parma violet collection by stealthily devouring the roots. Not every year though, cos I'm a cheapskate, I've learnt to keep an eye out for adult vine weevils and order the nematodes as soon as I spot one.

I've found they reduce slugs but have very little effect on snails.

Yep. Nemaslug works well, make sure you don't get other species, store properly and follow the instructions.

You could also use slug pellets. These used to be metaldehyde (withdrawn now), or iron phosphate.

Iron phosphate breaks down to iron and phosphorus (both good for plants and environmentally friendly).