Posted: 05/05/2015 at 12:21
Well, we have a fair number of rockeries (horrible word!) and there are no more molluscs on them than on the rest of the garden. We have a water meter in a brick lined 'well'. type thing. It is stuffed full of snails and I cannot say that they have ever invaded the Alpine growing area next to it.
By all means incorporate a pond in your plans. Frogs, toads and newts all eat molluscs. Provided you give them plenty of cover, the cats will not be a problem to your amphibians. At least the 5 cats in this garden do not bother them.