to keep house flies away.
bay leaf–bay leaves also produce a scent that flies hate. other insects like moths, roaches, earwigs and mice also hate the smell of bay leaves. growing bay plants in infested areas is a great deterrent but using dried bay leaves in muslin tea bags are equally as effective.
lavender–lavender is a sweet smelling herb that many people find to be calming and relaxing. flies however, do not. if you one who enjoys the smell of lavender, then hanging some dried lavender in your kitchen might be good fit for you.
mint–this is also another fairly inexpensive herb that you can buy from the store either fresh or dried. 