DIY Fly Repellent For Porches (Easy Home Remedy)

3 Materials
3 Minutes

We shared this on Chemistry Cachet several weeks ago, and we are already having readers write in saying they love it!

When I first tested out this home remedy, I was skeptical how well it might work. I researched the science behind bar soap for insects many years ago, but I have never tried it for flies. Flies are really hard to deter this time of year especially depending on your environment (around water, animals, farms, pets, etc).

Remember, this home remedy is specifically for a porch area.

Also, make sure you always check out our blog posts because we discuss the science and purpose behind each ingredient. We also go into detail on reasons why something didn't work for you and FAQS!!

icon icon More about the mesh bags and other ingredients found here in the blog post.


  • Irish Spring Soap Bars
  • Citronella Essential Oil
  • Mesh Bags with Zipper or Draw String


  1. Gather your soap bars, I have three for my porch area. You can use as many as you want to place around your area.
  2. Add drops of citronella oil to the soap bars. It will slowly soak in to the top, but it is also okay that it runs down the sides.
  3. Let the bars sit out for just a few minutes before placing them in the mesh bags or add them while the citronella is still wet. Either way is fine!
  4. Add one bar of soap to your mesh bag. If a full bar doesn’t fit, you can cut it in half.
  5. Set them around your porch or hang them up.

Does This REALLY Work 100%

It does for us on our porch and many readers too, but don't forget there are dozens of factors for flies. We have other proven tips to try for flies you can read in our blog post here!

Why Irish Spring Soap?

This is thoroughly discussed in the blog post, but using bar soap to deter bugs is a very long time home remedy. Some of our research dates back to the early 1900s. You can view this and other details on the blog :)

Interested in finding more ways to repel flies?

Explore this DIY Natural Fly Repellent With Coins to keep those pests far away from your home!

Remember, you can hang these outside, set them around your tables or chairs. They work best if set directly near the area to deter the flies!

Resources for this project:
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Alexis @ Chemistry Cachet
Want more details about this and other DIY projects? Check out my blog post!
Frequently asked questions
Have a question about this project?
3 of 70 questions
  • Carolyn Sanford Carolyn Sanford on Jul 25, 2023

    Will it stop squirrel ?????!!!

  • Irma Irma on Apr 03, 2024

    Does this work on these farm mosquitos, they're flying wild.

  • Sharon Sharon on Apr 04, 2024

    I have been doing this for years to keep deer and rabbits out of my plants.

Join the conversation
3 of 85 comments
  • Kat Jennings Kat Jennings on Apr 03, 2024

    Remember to do away with these bags of soap when it rains.

    • P P on Apr 05, 2024

      they are on her porch - bet it is a covered, roofed one!

  • Forestine Jackson Forestine Jackson on Apr 04, 2024

    I started doing this about four years ago and it even repelled spiders and ants. I used only the soap but IT WORKS!