Ooh thanks for that, I didn't know pepper kept them off by burning their paws, I'm glad I didn't opt for that one! I would have thought it was the smell they didn't like.
I'll give the moth balls a go first, they should work. If theres any problems I'll try Bernices nephowotsit powder, I like the idea of keeping away cockroaches and mice as well! Not that I've seen any here, but we do get beetles that LOOK like cockroaches on first glance, they're so big!