They are also testing the new climbing gear they have evolved - my son rented a house which had a heavy covering of mile-a-minute- plant right up to the roof, when we cut it down, the whole wall was covered with slugs and snails!! Ugggg ............... They do walk up our brick columns to get into the hanging baskets, and the water butt to throw themselves into the hostas (there are copper collars on their pots which they don't like - maybe I need to put a collar on the water butt too!)