Posted: 04/09/2014 at 21:58
Toads are completely carnivorous and eat mainly insects and the odd slug, so it won't be old toady eating your crops. I think your lettuces are still being eaten by slugs as copper barriers, while offering a degree of deterrence, are far from the perfect slug protection. Your best bet is to go out at night (which is when slugs are active) with a torch and pick them off by hand (disposable gloves are good if you don't like touching them.) What you do with them after that is up to you, but they will return if you simply move then elsewhere. They get 'the snip' from a pair of secateurs here and laid to rest in the compost heap.