Lavender can also serve as a potent fly repellent, due to its intensive scent. You can use it on a sponge, and make it spill-proof.

You will need:

• Lavender essential oil
• Sponge
• Jar or can with a lid

You should apply several drops of lavender essential oil on the sponge, and then place it into the jar. Close it tightly, and leave it for several hours or until the next morning to concentrate the smell.

Then, you can open it a bit and place it wherever needed in the house to keep flies away.

Additional tips:

• The bowls in which you place the rotten apples should be cleaned well as they might start smelling disgusting
• Before use, wash the Mason jar with hot soapy water
• You can also use eucalyptus and citronella essential oils to repel flies and other insects
• Prepare a potpourri of the dry herbs of peppermint, lavender, and lemongrass and effectively deter flies
• If you have a garden, you can plant lavender, lemongrass, and peppermint, and have them always at hand

Source: womanpositive.net