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diatomaceous earth for pest control

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gday peeps just chasing some info on using diatomaceous earth to kill a few bugs in soil. Noticed a few bugs in my soil when watering, I'm growing in gro. So I've placed a nice layer over the top of my soil and have been bottom feeding for 3 days now. So how long do I keep the diatomaceous earth on top of my soil and when its done its job I can just water it in ? Any help greatly appreciated.

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Just leave it on the surface ,,stops bugs coming back ...

you should be able to water from the top if that’s what you normally do.


any larvae in the soil might take a week or two to appear ,,

cheers mate, I've been watering from the bottom and just leaving the surface dry to maximize the damage to any little pests. I will just bottom water for another week or so.

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