This Spring we had to battle drought, croton scale, mealy bugs and red spider mites. Just when you think you have overcome the maladies this happens. These are pictures of snail chew marks on my Mona Lisa leaves. Couldn't chew on Veitchii leaves. No they have to dine on my slowest cultivar. I guess I need to add spreading snail bait as another garden chore. The Merit does not appear to effect them.