For decades I've been using six-inch cubes of 1/4 inch galvanized wire mesh for crocus and tulips, among others. The mesh is expensive, but it lasts for decades. There will be rough edges, and they're hard on unprotected hands - and just as hard, I hope, on curious noses sniffing around the bulb beds. The question was asked: what bulbs do mice and rats attack? Here are two lists which should guide beginners. Under my conditions, the following are rarely if ever bothered by rodents (some have other problems): hyacinths, squills, glories-of-the-snow, grape hyacinths, ornithogalums, reticulate irises, juno irises, Dutch irises, bearded irises, colchicums, some lilies (those with Lilium candidum or L. henryi in their background in particular, but definitely not most), anemones, ranunculus, alliums, daylilies, aroids in general, Ipheion/Tristagma, Cyclamen (past the yearling stage), Eremurus, peonies, Camassia, Eranthis, some frits and amaryllids in general (Narcissus, Amaryllis, Galanthus, Lycoris, Nerine for instance). The particularly vulnerable sorts include crocus, tulips, erythroniums and most lilies. One aspect of the vole problem has yet to be mentioned in this discussion. Periodically, the vole population burgeons, seemingly exponentially. They become so numerous that they show up in broad daylight. During these periods, there will be feeding frenzies: even ordinarily unpalatable bulbs such as those of small daffodils or the tubers of Anemone blanda or lesser celandine will start to disappear if not protected. I have no idea if these are eaten or just carried off to be stored. During these periods it's not unusual to see big Hosta in the garden go slightly off color: if you give the plant a slight push, the whole thing topples over because the voles have eaten almost all of the roots. After writing the above, I read Kathy Stokmanis' post on the same topic. One caution: half inch mesh would probably not keep out our local voles, some of which are not much bigger than the last two joints of an adult's middle finger. Jim McKenney firstname.lastname@example.org Montgomery County, Maryland, USA, USDA zone 7, where the dearth of bulbs in the local indigenous flora seems to be telling me something.