DIY Pepper Spray




About: Maker from USA. Follow me to stay up to date on my projects and possible kickstarters! Business email:

Have you always wanted to make pepper spray?

I dont know about you, but I have. After convincing myself it would be too expensive, I figured out how to make pepper spray for FREE. Thats right, this projects is absolutely free to make using household materials.


My eyes were burning and it felt like someone turned the heat on my face up a few 100 degrees

Be safe while using this product

With this pepper spray you can

  1. Deter an attacker
  2. Prevent an animal attack
  3. make animals stop eating your plants

And much more! Of course, I'm not responsible for any actions you make regarding this project, so be safe!

Lets make some Pepper Spray!

If you like this project, Please vote in the following contests

Teacher Notes

Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.

Step 1: Materials

You will need

  1. Isopropyl rubbing alcohol

  2. Oil (plain cooking oil)

3. Two small containers

4. One spray bottle

5. Ground Cayenne Pepper (Or grind your own)

6. Coffee filter

Thats all you need! I had these around my house, it was FREE!

Step 2: Pour in Pepper

Open the cap and pour a heaping amount! No exact size, but roughly half a cup.

I just eyeballed it and made a pile.

Step 3: Rubbing Alcohol

Next take your rubbing alcohol and pour it into your plastic container. Add up to about 1 cm above the pile of ground pepper

Step 4: Mix It Up!

Get a plastic spoon and start mixing! Stir it for about 2 minutes to really mix it in.

Now let it soak. I waited only an hour because I got pretty tired of waiting

To really make this extremely strong let it sit overnight or even better, a whole day!

Step 5: Add Oil

Now get your cooking oil and add just a little bit. About 1-2 tablespoons. I severly messed up and added way too much oil. Oh well. It will still work fine.

Step 6: Mix It Up Pt. 2!

Start mixing again! Mix for again about a minute or two.

Step 7: Filter the Mix

Place a coffe filter over the top of a cup

No pour the mix over the filter and wait till all the "Juice" seeps through

You now have very fine/pure pepper spray

Just smelling the mix caused my eyes to water! It works!

Step 8: Put Mix in Bottle

Now get your spray bottle and pour your mix in! You can now spray your pepper spray!

Next Step!

Step 9: Defend Your Self!

You now have fully functioning pepper spray! This stuff really works!

You can use it to deter attackers

Prevent animals from eating your plants

Scare off animals

Although I'm not to blame should something go wrong in those situations


Having said that, Go have fun!

Please vote for this instructable if you liked it. I really appreciate it.

Apocalypse Preparedness Contest

Participated in the
Apocalypse Preparedness Contest

Tools Contest

Participated in the
Tools Contest

Be the First to Share


    • Book Character Costume Challenge

      Book Character Costume Challenge
    • Made with Math Contest

      Made with Math Contest
    • Cardboard Speed Challenge

      Cardboard Speed Challenge

    16 Discussions


    4 years ago on Introduction

    If you want to take this to the next level, Use a chili that originates here in Australia

    "The Trinidad Scorpion"

    2 replies

    4 years ago on Introduction

    Does this work with methylated spirits, rather that ethanol/rubbing alcohol?



    4 years ago on Introduction

    Check wind direction carefully, or face a selfie. :)

    Its possibly a better idea to get a nozzle which sprays a stream and not a mist, maybe you can hack the present nozzle to get a stream.

    1 reply

    Reply 4 years ago on Introduction

    I was testing it. Its the only spray bottle I could find lying around the house. If I was really trying to make this effective, I would probably use one of those large spray bottles used on for dogs. Thanks for the advice!


    4 years ago on Introduction

    You could also use any hot pepper. The compound you are extracting is the capsaicin, if you ground some hot pepper seeds you could end with a very powerful pepper spray.
    Also, use ethanol, not rubbing alcohol.

    1 reply

    4 years ago on Introduction

    I agree with the other users here. Probably going to need a different nozzle for self defense use, but I do think this would be an effective (and organic) way to discourage garden pests!

    1 reply

    4 years ago on Introduction

    Spray bottles like that don't have much range - be careful not to get yourself in the face!

    1 reply

    Reply 4 years ago on Introduction

    Oh trust me I found that out the hard way... I was seeing if I could actually make pepper spray. This is an old bottle I had lying around the house, If I was really trying to make this effective, I would probably use one of those large spray bottles ment for dogs. Thanks for the advice!