If you're a gardener, you probably have some fragrant herbs around.
If you're living in modern times, it's likely you have a garbage disposal in your sink -- probably a bit less fragrant.
Herbs like to be pinched back, and garbage disposals like to be sharpened and cleaned. Hmmm. That's what we call turning waste into a resource! How about giving that long-haired basil, tarragon, mint, or rosemary (non-woody tips only, please) a trim and running it through the garbage disposal along with some ice cubes and a bit of salt?
Happier herbs, fragrant kitchen, happy gardener. Done!