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Healthy Home Economist / Archives / Green Living / Pest Control / Amazingly Effective, Nontoxic Fly Repellent

Amazingly Effective, Nontoxic Fly Repellent

by Sarah Pope / Affiliate Links ✔

fly repellent

Flies seem to be everywhere this time of year. Some people prefer to use homemade fly traps. What if you want to simply repel flies instead of trapping them after they’ve already become a nuisance?

I was out at a local farm just yesterday and the flies were very noticeable and quite annoying as I went about my work. Seeing all those flies reminded me of a simple, non-toxic, and very effective fly repellent that I observed in action at one of my children’s field trips a couple of months ago.

The class was visiting a petting farm with a large open barn where donkeys, horses, goats, and other livestock were available for the children to observe and interact with.

Despite so many animals in a small semi-enclosed area, there were no flies buzzing around! Curious, I asked the owner about this, and he pointed to the heavy-duty plastic bags partially filled with water hanging over every stall.

He explained that a clear bag of water with a penny at the bottom would repel the flies very effectively. He went on to explain that the “eye” of a fly is actually hundreds of eyes and the reflection of light on the bag of water keeps them away.

“Why the penny at the bottom of the bag?”, I asked.

Grandpa the farmer answered that he wasn’t exactly sure but the penny did seem to increase the effectiveness of the hanging bag of water alone. He added that he didn’t know how many square feet each bag covered so he just put a bag over every animal stall to keep as many flies away as possible.

He also had put up a few bags over the picnic area and it was so nice to be able to eat lunch without flies swarming everywhere!

Note that the clearer the water, the more effective this trick is. If you use rusty well water, it won’t work as effectively as ultra clean and clear filtered water.

Try this fly repellant method for yourself!  If you do, please check back and let us know how it worked for you!

Fly Repellent Only Works for Flies

Please note that this fly repellent trick only works for flies, not mosquitoes, and other insects. It also works very well for flies in the Southern United States. However, it may not work as well for flies from other geographical areas such as blowflies in Australia.

If you need to repel other insects like mosquitoes, ticks, or horse flies, this article on natural herbal insect repellent can help.

fly repellent bag

More Natural Pest Control  Ideas

Removing Ticks Safely (plus prevention ideas)
Nontoxic Pest Control Ideas that Work
Natural Fire Ant Killer that Works FAST
Effective Bed Bug Removal Techniques
Natural Flea Infestation and Prevention Strategies
Attracting and Using Ladybugs for Garden Pest Control
Safely Get Rid of Carpenter Ants in a Snap
Spider Repellent Guaranteed to Work
Mosquito Bite Remedy

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Category: Pest Control
Sarah Pope

Sarah Pope MGA has been a Health and Nutrition Educator since 2002. She is a summa cum laude graduate in Economics from Furman University and holds a Master’s degree from the University of Pennsylvania.

She is the author of three books: Amazon #1 bestseller Get Your Fats Straight, Traditional Remedies for Modern Families, and Living Green in an Artificial World.

Her four eBooks Good Diet…Bad Diet, Real Food Fermentation, Ketonomics, and Ancestrally Inspired Dairy-Free Recipes are available for complimentary download via Healthy Home Plus.

Her mission is dedicated to helping families effectively incorporate the principles of ancestral diets within the modern household. She is a sought after lecturer around the world for conferences, summits, and podcasts.

Sarah was awarded Activist of the Year in 2010 at the International Wise Traditions Conference, subsequently serving on the Board of Directors of the nutrition nonprofit the Weston A. Price Foundation for seven years.

Her work has been covered by numerous independent and major media including USA Today, ABC, and NBC among many others.

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Reader Interactions

Comments (356)

  1. Home ~ My favorite place to be via Facebook

    Jul 19, 2011 at 11:21 am

    Trying to think of a good way to hang it though, haha.

    Reply
  2. Home ~ My favorite place to be via Facebook

    Jul 19, 2011 at 11:20 am

    Great tip! Going to give it a try in our garage!

    Reply
  3. Nicki Morin Black via Facebook

    Jul 19, 2011 at 11:19 am

    Thank you!!! Do you have a nontoxic repellent for mosquitoes for your body, as well as, for a water source (such as a pond without fish)? 🙂

    Reply
    • sarah

      Jul 19, 2011 at 11:20 pm

      Castor oil repels mosquitos. I mix it with coconut oil and rub it on my skin as well as my two small girls (3 yrs and 5 mos.) It works great!

    • Emily @ Butter Believer

      Jul 20, 2011 at 12:36 am

      Castor oil?! Never heard that one, I’ll have to try that!

      I did hear recently though that catnip oil was found to be even MORE effective than that nasty toxic DEET… isn’t that amazing? That was going to be next on my list to try, but I think I’ll see if I have some castor oil on hand!

    • cmh

      Jun 6, 2012 at 2:35 pm

      maybe you could infuse the castor oil with cat nip.

    • Tiffany (As For My House)

      Jul 26, 2011 at 1:33 pm

      Don’t know about your pond, but I’ve been through a lot looking for ways to protect my allergic girl (as well as the rest of us).

      Although some essential oil bends and such seem to work well, the cost can add up.

      I was delighted to find out about “The Vinegar of the Four Thieves” – http://www.bulkherbstore.com/The-Vinegar-Of-The-Four-Thieves Believing in the legend is optional, but the formula is terrific!

    • Heather

      Jun 10, 2012 at 12:52 am

      Vanilla, like the kind used to cook with, works decently well. Be aware that it stains, though. Last year, I put it on my dog’s harness and lead, for taking her out at night, and it seemed to work. I kept a separate bottle for cooking with, of course.

    • Addie

      Jul 13, 2012 at 8:45 pm

      You can get the clear vanilla at the dollar tree- it works ok for some people- not so well on others that seem to attract mosquitos- like me.

  4. Kathy

    Jul 19, 2011 at 11:16 am

    This sounds like a really cool ideas for BBQ and other get togethers. How do you actually hang a bag of water without puncturing it? I imagine if you do puncture it the rip would keep going.

    Reply
    • Jennifer LeBaron

      Jul 19, 2011 at 1:00 pm

      http://www.dirtdoctor.com/Fly-Control-Plastic-Bags_vq1849.htm

    • Jennifer

      Jul 19, 2011 at 1:09 pm

      You could probably hang it with a tight clothspin.

    • Sarah, TheHealthyHomeEconomist

      Jul 19, 2011 at 2:33 pm

      You cut a hole in the top of the bag and tie string through it. The water is only in the bottom half of the bag as seen in the picture.

    • Trixie

      Jun 12, 2012 at 12:15 am

      We just used a stapler and stapled the bag to the top of the door frame. Staple above the “zipper” part of the bag but not so high that the weight of the water pulls the bag down.

  5. Sarah

    Jul 19, 2011 at 11:12 am

    Trying this over my kitchen sink! Thanks!

    Reply
  6. lia dominique andress

    Jul 19, 2011 at 11:09 am

    does this work for mosquitos?

    Reply
    • Sarah, TheHealthyHomeEconomist

      Jul 19, 2011 at 2:32 pm

      No, only flies. I would be interested to know if this works for blow flies in Australia too.

    • Leah

      Jul 19, 2011 at 10:34 pm

      Do you have an idea for keeping mosquitoes away?

    • Christie

      Jul 27, 2011 at 8:59 pm

      Try eating raw garlic. It really does keep the mosquitoes away. If you do, always eat the garlic with food (I usually do a full meal with it), or it will make you sick to your stomach. It’s good mixed into yogurt or kefir, or in pickle juice, or even just mixed into your soup.

    • Evie

      Jan 11, 2012 at 10:17 am

      My mom used to make a garlic dip using Phil. Cream Cheese & pressed garlic. It was simple but delicious. You can also make an oil & vinegar dressing with pressed garlic in it for your salads.

    • connie

      Apr 10, 2012 at 4:21 am

      Not too much garlic when eating gals…you will sweat the garlic and then smell..no lie. I fed the horses of ours garlic to keep the biting flies off and when we rode them they would sweat garlic …whewwwweee…but it did work. good luck

    • CJ

      Jun 11, 2012 at 12:31 pm

      Works for keeping people away, too… 😉

    • Mark McFadden

      Apr 10, 2012 at 6:48 pm

      Ceiling fan or a floor fan works on mosquitios.
      They can’t fly in the wind.

    • Tomoko

      Jun 7, 2012 at 1:03 pm

      Thanks! I would try that!

    • Virginia

      Jun 19, 2012 at 11:59 am

      lavender and citronella plants placed strategically around sitting areas or whatnot also help repel mosquitoes.

    • Carrie

      May 26, 2012 at 11:08 pm

      I know this post is a little old, but I thought I’d put my 2 cents in. I grew up in a rural area and everyone I knew used this to keep flies away, I can’t believe no one has ever heard of it!

      As far as mosquitos got my great grandparents and my grandparents used to fill a large barrel (the wooden kind) with water and put gold fish in it. Sometimes they grew a small water plant in it. The plant/water attracted the mosquitos and the fish ate them. Win-win all around.

    • fritz

      Aug 28, 2012 at 9:52 pm

      buy listerine and use a spray bottle in an area keeps mosquitoes away.use around door ways and outside tables and trees also

    • Denise

      Jun 17, 2013 at 11:13 pm

      The Florida barn where I keep my horses use goldfish in the water troughs to keep down the mosquito population.

    • Bobbye Sonnier

      May 30, 2012 at 10:08 pm

      Citronella plants really help keep them away and they smell good too.

    • Psyluna

      Jun 8, 2012 at 11:58 pm

      Unless you’re allergic…

    • Brittney

      Jun 3, 2012 at 11:36 pm

      Avon Skin So Soft works like magic. we use it on the livestock during shows and it works for biting flies as well.

    • Kelbi

      Jun 12, 2012 at 12:44 am

      My grandmother swears by Skin So Soft for bug repellent. I have used it whenever I’ve been outside for a long period ever since I was a little girl, and haven’t had a problem with the bugs. It doesn’t smell too bad either! 🙂

    • Malissa

      Jun 12, 2012 at 11:02 pm

      I even use the Skin So Soft Bath Oil on my horses as a fly repellant. My shoer said they were the best smelling horses he’d ever trimmed and the flies stay away.

    • Jenny

      Jun 6, 2012 at 5:51 pm

      I just came across this pin on Pinterest: http://www.homemademamas.net/2010/08/bugs-be-gone.html?m=1 check it out.

    • Sam

      Jun 6, 2012 at 9:47 pm

      To keep mosquitoes away, eat more citrus and less bananas during summer months. If you get a nice citrus air freshener and spray it on doors it will also keep them away from entrances.

    • Jeremy

      Jun 8, 2012 at 11:11 pm

      Here is an interesting article about building an easy mosquito trap. http://www.thriftyfun.com/tf22399231.tip.html#solutions

    • Susan

      Jun 10, 2012 at 9:42 pm

      Try lemon grass essential oil where ever you want the mosquitoes to stay away from. Drop the oil on a sponge and put it in an open container. Let me know how that works for you.

    • Trixie

      Jun 12, 2012 at 12:13 am

      If you situate several pots of sweet basil around your deck or patio the mosquitos stay away. They do NOT like the smell and as a bonus you get tons of fresh basil to cook with.

    • Samantha

      Jun 12, 2012 at 2:26 am

      I’ve always heard that mosquitoes were drawn to water. My parents had a large old deep freezer sitting behind there private fence that old neighbors had left there… anyways it was full of water and no one wanted to go in our back yard because of mosquitoes so and elder man told us that if there was any water around to try and get rid of it and if we couldnt to dump oil in it until it covers the top of the water source. it lays on top of the water and mosquitoes cant get to the water or lay eggs and eventually it would ward off. So far it worked for my parents!

    • Kindle

      Jun 13, 2012 at 11:07 am

      If you spray listerine in your yard in will warn off the mosquitoes 🙂

    • kandace

      Jul 6, 2012 at 12:58 pm

      I found this on pinterest a while back and tried it but it actually attracted bugs really bad

    • Sherry

      Jun 19, 2012 at 9:42 pm

      plant Lemongrass around where you want to repel mosquitos.

    • Amy

      Jun 23, 2012 at 11:52 pm

      I have heard that carrying a dryer sheet on you works for Mosquitos. Anyone know if this is true? I haven’t tested it out yet.

    • Talia

      Jul 12, 2012 at 9:29 pm

      Yes, this is true. I mowed my lawn with a couple of dryer sheets hanging out of my pants pockets. Probably didn’t look very fasionable, but it kept the mosquitoes away. 🙂

    • Marina

      Oct 22, 2012 at 9:38 pm

      Didn’t work for my kids or myself… Tried it with heavily scented drier sheets too. Got bit terribly in a short period. 🙁

    • Tonya

      Nov 29, 2012 at 1:48 pm

      Dryer sheets have always worked for my family. We even tie them to the trampoline so that the kids can sleep on it. They quit getting bit. My oldest use to get bit SO very badly. Once she started carrying bounce dryer sheets she no longer got bit. Marina, sorry to hear it did not work for you and your family. My oldest does rub the dryer sheet on her skin before putting it in her pocket or tying it to her belt loop. You might try that??

    • Cookie Angeletti

      Jun 26, 2012 at 9:52 pm

      Buy Listerine Mouthwash in a spray bottle. I bought the store brand (was much cheaper) check the ingredients to make sure they are the same as the namebrand.
      Works great!

    • anita smith

      Jul 7, 2012 at 7:41 pm

      saw this – might help
      http://www.velacreations.com/pet.html

    • Hannah

      Jul 9, 2012 at 11:23 pm

      1 part mouth wash, 2 parts water – spray on patio before party or dinner. Works like a charm.

    • Tom

      Aug 15, 2012 at 10:16 am

      I bought concentrated garlic and mix it with water, then spray that around the entire perimeter of my yard with a garden sprayer (spray everything from the ground up to about 8-10′ high). It creates a barrier that mosquitoes don’t seem to like to pass through. Very effective, and lasts a couple weeks (or the first big rainstorm).

    • Michelle

      Oct 28, 2012 at 4:17 am

      Take vitamin B every day. I only had 2 mosquito bites all year and it was when I forgot to take my vitamin B for a few days. Worked for me like a charm and I’m usually someone the mosquitos go after big time!

    • Leah K

      Feb 9, 2013 at 10:05 pm

      Lemongrass works great at keeping mosquitoes away. Get a few plants and place them around your outside sitting area and play areas. The strong citrus smell keeps the nasty bugs away.

    • Jo Brody

      Jul 20, 2011 at 5:02 pm

      I will try it out in summer and let you know.. We are in the middle of winter here so not a fly to be seen … Love your work !!!

    • Bethanie

      Jul 4, 2013 at 5:09 pm

      I was thinking of and wondering the same thing… the flies in Australia are RIDICULOUS. Will have to try this when I’m back there.

  7. Audry

    Jul 19, 2011 at 11:07 am

    This is the third time I’ve heard of this method in the past month, each source completely independent of the others. I wonder why it’s suddenly become so popular. I wish I’d known about it a couple months earlier when we had a random huge fly problem around our chicken coop (a combination of food grade diatomaceous earth, fly paper, and then a heavy rain storm seemed to take care of the problem.) We’d never had a problem with flies before that, so I’m hoping they don’t come back, but if they do I’ll definitely be trying this method.

    Reply
  8. Kristin Konvolinka

    Jul 19, 2011 at 11:00 am

    Several years ago a friend came home from an extended trip to Spain where he learned this very trick. When I showed up at his house he had several bags of water hanging over his front door as well at the back deck. I totally forgot about it! Thanks for reminding me, I’m going to go hang a few bags of water in my fly filled back yard, I’ll let you know how it goes. We just had a huge fly larva infestation…they icked up a batch of kombucha…apparently the mamma mushroom was a perfect place for those squirmy little guys to grow. I wish I had remembered this trick way back then! Thanks!

    Reply
  9. Sherri

    Jul 19, 2011 at 8:54 am

    Several years ago, when my brother moved to a nursing home, I noticed they had a fly problem on the sitting porch. I lightheartedly suggested they try this method. They still use it to this date. I am also in Texas.

    I absolutely LOVE your blog 🙂

    Sherri

    Reply
    • Sarah, TheHealthyHomeEconomist

      Jul 19, 2011 at 11:08 am

      Thanks Sherri! I just love encouragement! 🙂

    • Damian

      May 20, 2013 at 1:51 pm

      Does this trick only work on Texan flies? just kidding…I’m anxious to try this. 🙂

  10. Mary

    Jul 19, 2011 at 8:49 am

    This works like a charm. They are used in many of the outside eating areas in the barbecue joints in and around Austin, TX.

    Love,

    Mary

    Reply
    • Connie

      Jun 21, 2012 at 10:31 pm

      How did you hang it up?

    • Nikki

      Jun 25, 2012 at 2:41 pm

      Connie- Let me know if you heard how to hang it also. Everything I think to try it seems like it would rip the bag.

    • ellajac

      Jun 26, 2012 at 11:39 pm

      I haven’t done this, but I would probably try folding the zip-edge over the bottom of a hanger, and fastening with a few clothespins? Hang the hanger on a bar, a nail, a screw, whatever.

    • Britni

      Jun 28, 2012 at 1:58 am

      I have found that using those binder clips (the big ones) from the office section works great…one on each end and you can string stuff through the little silver handle parts. Also, the hangers you use for skirts will work! Or, if you want something more sturdy, let the air out of the bag and cinch it together in your fist and tie a hair tie or rubberband around it, then you can put string through one of the hair tie/rubberband loops.

    • S

      Jul 11, 2012 at 6:30 pm

      To hang the bags, baby-sized pant hangers or adult-sized pant hangers with clips that can slide work well. Depending on the size of the bag you use.

    • Casi

      Apr 25, 2013 at 10:34 pm

      Put a rock inside the top corner of the bag and tie twine, string etc below the rock and it will hang beautifly without tearing the bag.

    • matt

      Jun 20, 2013 at 6:01 pm

      I haven’t tried this yet but I plan to when I get home, I have bought some tarp clips that have a 1 to 2 in clamping area that you clamp on to a tarp and a hole on the other end to tie with. I think I got them at walmart or im sure any place with camping or out door stuff would have them.

    • Kristen

      Jun 27, 2012 at 11:49 am

      You could probably use some wooden clothes pins (the kind you squeeze) and some heavy duty string.

    • momof2cubs

      Jul 23, 2012 at 2:08 pm

      I have tried the clips from the office supply stores and they worked good. Use string, yarn or narrow robe to hang it. Its nice to have a narrow rope to toss over a low branch, if you are at a picnic or camp site. This is cool because when you are at a picnic or camping, someone always has…water, zip lock bags and pennies. LOL

    • Holly

      Jul 28, 2012 at 9:25 pm

      I used simple zip ties and it didn’t tear the bag at all and held the weight

    • Lisa

      Aug 2, 2012 at 5:12 am

      I simply used push pins and attached it to the door frame of our front door. Now when my grandchildren run in and out to play the flies don’t follow them inside.

    • deby Marks

      Feb 8, 2013 at 4:24 pm

      We hang ours with push pins/thumb tacks above each of our entry doors. we have done this for years. We where told that it is an old amish trick, don’t know how true it is.

    • Miss Prudence

      Apr 8, 2013 at 1:36 am

      the amish used used plastic bags?

    • Julie Davenport

      May 29, 2013 at 4:54 am

      Miss Prudence, I live near a lot of Amish and yes, they use plastic bags. 🙂

    • Eleanor

      Sep 16, 2012 at 12:13 am

      Does not work for me! I have 3 chickens in my backyard and thought this would be good for keeping the flies away…..nope! 4 days up and still MANY flies!

    • j layton

      Apr 2, 2013 at 2:10 am

      I was bombed with hundeds of flies in Ok. 2 years ago. I was disperate for a remedy to get rid of those pesty, nasty insects when I ran across the Penny in the Bag. I was thrilled just thinking my problem was solved. Nope,…, it did not help at all !!! While writing this, I thought,… maybe,… I used the wrong type plastic bag. I used a common clear, plastic, freezer bag or maybe, my flies, were wizer than the normal fly.

    • Ruth

      Jun 25, 2013 at 1:14 pm

      I wonder if it doesn’t work because there’s no light reflecting on the penny? I’ve never heard of this before, so I’m speculating. Our barn is dark and I don’t think this would work. But maybe outside.

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