This is what I do. Cut off all leaves, chuck the leaves, soil and moss in the compost container, let the bulbs dry in a cool place NOT in plastic containers, but in old shoeboxes. In the autumn plant them in the garden. In flowerbeds, or in big tubs, ten or so at a time. They will flower again. I am looking out of my window as I type, and I see last year's potted hyacinths are now in my big pots, just breaking into bloom. They come back year after year.