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Garlic spray for slugs and caterpillars

Maak zelf knoflookspray tegen slakken, luizen en rupsen
Make your own spray to ward off slugs, snails, and caterpillars

Homemade spray for all your pests

This spray helps fight caterpillars, slugs, snails, and all kinds of other pests. Like ants, aphids, caterpillars, and whiteflies.

It contains oil (from the garlic) and soap, so it sticks to the plant. This suffocates aphids and tiny caterpillars. 

And it makes the leaf inedible to those pests - not to you 😉.

Snails don't like the garlic smell

They'll avoid the plants you've sprayed.

The smell is pretty intense.

Use the spray, and your garden will smell like a French kitchen.
Luizen en mieren op tuinbonen
Aphids and ants on a bean plant

Recipe for garlic spray


  • 1 liter of water
  • 5 cloves of garlic (chopped)
  • 1 small onion (chopped)
  • 1 teaspoon of cayenne pepper
  • 1 tablespoon of soft soap


Put the water in a spray bottle, along with the chopped garlic and onion. Let it marinate for a few days.

Strain the water and mix it together with the cayenne pepper and soap.

To keep the garlic spray from clogging the nozzle of your spray bottle, strain it again through a coffee filter or a cloth napkin.

(Tip: instead of cayenne pepper, you can also use tabasco. This has the same effect, without risk of clogging).

Then put it in a spray bottle.


Spray your plants every few days on the tops and undersides of the leaves. It's best to do this in early evening, because that's when the slugs and snails come out.

If you're goal is to fight aphids and larvae, then repeat this until you don't see them anymore. 

After a week, spray your plants again to kill eggs and hatched larvae.

After it rains, spray again.
Good luck!

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