For neatness in the garden, you could partially cut the browning stems and leaves by about two-thirds, or tie them back with some raffia or green jute twine (to blend with the foliage). A less time-consuming approach is to interplant springflowering bulbs with perennials. As the perennials emerge, they will hide the browning bulb foliage. Interplanting is also effective for keeping four-legged creatures from exhuming bulbs. Another deterrent for the likes of squirrels, cats and dogs is to place twigs, branches or chicken wire over the site.