......I treated the area with the recommended rate of slug pellets . There was plenty of slime trails but only a few dead slugs......
If its ferric phosphate pellets that you used, the slugs should go under ground to die. If the pellets were metaldehyde based, then the slugs should be more visible on the soil surface.
Thanks that's useful info for when I go a slug & snail hunting by torch light tonight .
Do you know if the ferric phosphate treatment tends to acidify the soil ? At present it's only very slightly acidic & I don't want to increase the level if I can help it?