One of many families' favorite parts of summer is the outdoor barbecue where we all gather around in one place, fire up the grill, and eat some delicious grilled burgers and meats. 

Adults usually spend the day drinking a beer and talking while the kids run about the grass spraying each other with water guns or tossing around a ball. It’s undoubtedly fun!

However; there’s one thing that could bring the mood on a summer BBQ down; Bugs! Those pesky flies love to get up in your face, on the food, and just seem to be invigorated to life in the summer heat.

If you’re tired of those gross insects landing on your burgers, hot dogs, and BBQ ribs, don’t worry. We’ve got a solution for you that you might have seen your neighbors using already.

Below we’ve got the step-by-step instructions to help you create a DIY tool to keep flies out of your backyard BBQ for good.

Ready to learn the secret? An Instructables contributor went through the play-by-play to help you get started with your own anti-fly device.

“You can buy expensive bug zappers but why when you could take the safe and humane approach? Just by taking five minutes, you will have a fly free BBQ,” the user wrote.

Sounds like it might be complicated? Nope. It’s super easy and you probably already have all the items required.

-Plastic sandwich bag
-Lime juice
-Table salt
-Pennies
-Water

Start by dumping 2 ½ cups of water into a… 

bowl and adding in a generous amount of salt and lime juice.

“Add two or three squirts of lime juice,” the user wrote. “There is no exact amount, it just keeps the pennies shiny. Stir this mixture to blend it all together. It will just look like regular water but by adding these ingredients its effects will last longer.”

Mix all of that together with a spoon. Then carefully pour that into a plastic sandwich bag until it’s almost full. But before you zip the bag shut, drop in your pennies.

That’s it! Your anti-fly device is ready!

Seal the bag and hang it around your summer BBQ with a paperclip that is bent at the end and stuck into the back. Just make sure no water can leak out…

It’s hard to argue with results. Many people agree that it works and swear by it every summer when they’re spending time outside with their families and friends.

Another Instructables user shared a comment as to why this method works. It’s science…

“Here’s the reason behind the effectiveness of homemade repellents. Flies have visual receptors called ommatidia. Unlike humans, they don’t have pupils that controls the amount of light that enters their eyes. 

Our pupils do, their ommatidium do not. Therefore, the reflective light or flickering light “scares” them because they can’t focus. Another homemade repellent is the use of an old CD. Just hang one nearby and allow our wonderful sun do its magic! The spinning CD that reflects the sunlight is a knockout for those pesky flies!!! Trust me…it works.”

Below we feature a video that explain more in detail how and what exactly is what keeps the bugs away wherever these bags hang. Watch the video, comment whether or not you think it works and share this article with your friends to see what they think.