A Simple Insecticide Without Any Chemicals

To repel spiders, aphids, and other insect pests in the garden, consider this  all-natural insecticide made with Castile soap. It’s a genius recipe.

Made with olive oil, Castile soap originated more than a thousand years; the Crusaders are thought to have introduced it to Europe as early as the 11th century.  You can use it to wash dishes, to launder clothes, to clean the house—and as an all-natural insecticide in the garden. Bea Johnson, author of Zero Waste Home, shares her recipe:

Ingredients and Materials:

Add 1/4 cup Castile soap to one gallon of water. Mix and pour into a reusable glass spray bottle.

For more of Bea’s mindful gardening tips, see Ask the Expert: 10 Tips for a Simplified Garden, to Grow More With Less.

Above: The Ultimate Glass Spray Bottle is $8.39 from Olive Cart.

Spray leaves of affected plants with the mixture; allow to dry.

For more all-natural insect repellents, see DIY: Bug Repellent Balm on Gardenista.

12 Great Ways to Use Castille Soap



Hayden H.
Hayden H.2 years ago

What a good and simple idea!

Marie W.
Marie W.2 years ago

Nice bottles too.

Wendy J.
Wendy J.2 years ago

A must try for me! Thank you for sharing.

Ryan Yehling
Ryan Yehling2 years ago

Awesome thanks!

JOSE Honr2 years ago


Aino M.
.2 years ago


Annie H.
Annie H.2 years ago

Thanks for sharing this idea.

Maryann Mancini
Maryann Mancini2 years ago

This is such a great tip. Thank you.

Aileen P.
Aileen P.2 years ago

Thank you for sharing.

Edo R.
Edo R.2 years ago

Thank you for sharing!