Mint is a must have!

Mint is a useful and inexpensive herb that is great to use in a refreshing drink, but did you know that it also can repel flies? You can use mint in both forms i.e. in fresh or dried form to deter flies. Apart from flies, mint is also helpful against mosquitoes, ants, and mice.
You can keep crushed mint leaves in shallow bowl, to keep flies away. If you want, you can also fill a few muslin teabags with dried crushed mint leaves and keep them in the infested areas.

Fly Co the Green Pesty's photo.