Homemade Roach Spray (Good for Ants and Other Bugs Too)

4 Materials
5 Minutes

Do you know what the number one question was we were asked this summer? How to get rid of roaches! One of our popular posts is our homemade ant spray, so readers want to know about other insects too. Especially roaches!

I just used a bunch of this homemade spray because a random trail of ants showed up on my front porch, and I didn’t want Amelia to get in it. I spray it to safely kill the ants and and things like roaches. It was safe for her, safe for the dog, and killed the ants.

Before we share the recipe, please head to our blog post. We have very important tips on keeping your home clean and free from bugs. This is always the first step when dealing with something like roaches or ants. They travel to find water and shelter.

 Please read this first!!


  • 2 cups of vinegar, distilled
  • 2 cups of water
  • 3 tablespoon dishwashing liquid
  • 3 tablespoons table salt
  • Spray Bottle


  1. Mix ingredients together, add to a spray bottle.
  2. Shake well before spraying each time.

 To learn more about the science behind these ingredients, please visit our link here.

To INTENSIFY this solution:

If you have larger roaches to deal with, eliminate the water in the solution above and replace with additional vinegar. This means the solution will contain 4 cups of vinegar, 3 tbsp dawn, 3 tbsp salt. I have used it on small roaches and it kills them instantly.

Remember to check out chemistrycachet.com for more science based tips! :)

Suggested materials:

  • Vinegar   (Store)
  • Dish Soap   (Store)
  • Salt   (Store)
See all materials

Alexis @ Chemistry Cachet
Want more details about this and other DIY projects? Check out my blog post!

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  • Lifestyles Homes Lifestyles Homes on Aug 12, 2021

    Having used salt in other home pest and weed killing remedies, it is essential to wash out & run clean water through the sprayer when finished.

    Or the dried salt residue will “crust” everything locked and clogged.

    I’m still trying to un-seize my 2 gallon garden sprayer.

  • Amy Amy on Aug 30, 2021

    I use grits dry for ants. Ants cannot pass gas and have to find water after eating. Do not touch the grits with your hands. Use a knife to open the box and sprinkle wherever you see ants. The next day sweep the grits up.