We've two sets of daisies in neighboring but not joined flowerbeds. In one, we have gerber daisies, but something's eating them! The petals are stripped off and the leaves of the plants are pocked with holes. In the other, we have white daisies, which have been doing well, but lately, some of their blossoms are being eaten away, as well. What can we do to keep something from eating the daisies, please?