this post was submitted on 22 Dec 2025
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Science Memes

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Veggie oil works without the smell. :)

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[–] blackbrook@mander.xyz 7 points 2 months ago (2 children)

You can just make a simple soap solution to spray them with. Look up home made insecticidal soap.

[–] Engywuck@lemmy.zip 11 points 2 months ago (1 children)

Last time I tried that I killed my plant, lol.

[–] I_am_10_squirrels@beehaw.org 4 points 2 months ago (1 children)

That's thinking outside the box! No more plants, no more pests!

[–] sem@piefed.blahaj.zone 4 points 2 months ago

Get at the root of the problem 

[–] BodyBySisyphus@hexbear.net 5 points 2 months ago (2 children)

You can't use regular soap; insecticidal soaps are fatty acid salts with potassium, while regular soaps are made with sodium.

[–] blackbrook@mander.xyz 1 points 2 months ago

I don't know what you consider regular soap, but my understanding is that liquid soaps typically have potassium, bar soaps may use either. But I was using the term pretty loosely, people often make homemade insecticidal 'soap' with dish detergent which isn't technically soap at all. Any surfactant tends to kill insects by compromising the waxy coating that keeps them from drying out.

[–] blackbrook@mander.xyz 1 points 2 months ago

As I do more reading though, I find warnings that many dish detergents will harm plants. Some people do spot tests, but buying a commercial insecticidal soap is safest. I guess I've been lucky, maybe because I use a crunchy natural dish detergent that is pretty mild.