Citronella is a well-known ingredient that is usually discussed when dealing with Mosquitoes.
However, not many people know that Citronella also works as a great fly repellent!
In fact, Citronella Mosquito Repellent Coils can work wonders in a yard or anyplace (outdoors) that has a fly problem.

We've all seen those yellow light bulbs, right? Studies have shown that yellow is the number one color that repels flies!. The good news is that they really work, but it would take surrounding your entire house with those yellow bulbs to have any lasting effect.

Pro Tip: Blue Light attracts flies. You can use Blue Light Bulbs to lure flies to other areas (and away from the area that you want to keep free from insects)!

This may seem obvious, but the best way to keep flies away is to not attract them in the first place! One way to keep from attracting those pesky flies is to keep the area clean.

Garbage is by far the biggest factor in attracting flies & other insects. Flies are attracted to the garbage & will lay their eggs which eventually become maggots.

Keep your garbage clean by wiping them down as thoroughly & as frequently as possible & clean up after your pets to keep the flies from congregating in areas that you want to stay insect-free!

This works best for smaller areas (such as a small picnic or small porch). Take a few glasses of water (they must be completely see-through) and add water about half-way up.

Throw a few pennies into each glass of water (make sure the pennies are not overlapping each other).

Now place each glass of penny-water surrounding the area that you want to keep flies away (Example: the food in the picnic).

This method is supposed to reflect light from the water & throw off the flies "compound eye".

Now sit back & enjoy your picnic!

There are a few natural remedies & formulas that are thought to keep flies away.
We will list the most popular below, however, it's important to note that these remedies - while they might work some of the time - are not a perfect solution & can be considered a "hit or miss".

Apple Cider Vinegar: Fill a bowl with Apple Cider Vinegar & place it in the place that you want to eliminate the presence of flies. The flies will be repelled from that area.

Lemongrass Oil: Similar to Apple Cider Vinegar above, flies are deterred by the smell of Lemongrass oil.

Milk. Sugar, Pepper traps: Heat one cup of milk, two tablespoons of Black Pepper, and three tablespoons of Sugar. Let the mixture simmer for 7-10 minutes. Allow to cool. Pour the mixture into shallow dishes. Place the dishes around the infested area & wait for flies to be attracted to the mixture. Once the flies land on the mixture, they should drown.