Their shells are broader than high, and similar in shape to the European edible snails. Adults may be an inch or two long depending on the species. They are basically ground dwellers, but will climb shrubs and trees to feed, particularly at night when they are most active. They are selective in their food choices, but generally feed on ferns, begonias, orchids, and similar succulent or tender ornamental plants. Bromeliad seedlings appear to be a favorite item on their menu.
Snails utilize some bromeliads for concealment rather than food.
At night they emerge from the bromeliads to feed on nearby preferred vegetation. Their nocturnal habit makes snails difficult to detect and control. If the area of infestation is not too large, one of the best control methods is persistant hand-picking. Though labor intensive, this procedure is reasonably effective, non-toxic, and environmentally acceptable. Molluscicides such as metaldehyde are useful if used judicially.