Even though the attack is spotty, it's probably deer. Nothing else would eat a whole perennial like that (rabbits are too short). BTW, cuts from rabbit teeth are sharp and clean as if they were made with pruners. Deer cuts tend to be ragged since they pull and don't cut clean.

I suggest spraying with a good repellent--Deer Off, Liquid Fence, Plantskydd, and try to concentrate on plants deer don't like. Strongly aromatic plants are not only unappealing, but also have some repellent value as the scent jams deer's predator defensese, their sense of smell. Such plants include Agastaches, Perovskia, Nepetas, Calaminthas, Geranium maccrorhizum as well as 'Bikovo', 'Karmina' et. al (but not other Geraniums).

Growing plants that they really like, like Phlox, is asking for trouble. Now that they're in the restaurant, it's only a matter of time before someone tries the other items on the buffet.