Does Neem Oil Kill Red Wigglers?

Neem Oil does not harm your worms and can be sprayed to control flies. Although it is an organic oil and has no negative effects on your worms, it does have negative effects on the beneficial organisms in your worm bin.

Will neem oil hurt worms?

Neem Oil. This is one of the best all-purpose natural insecticides, killing everything from cabbage worms and squash bugs above ground to nematodes and grubs beneath the soil.

Is neem safe for worms?

Neem oil is a popular choice in organic gardens because it is: Nontoxic: As long as it isn't sprayed directly on them, neem oil is nontoxic to beneficial garden insects such as predatory wasps, honeybees, earthworms, ants, spiders, ladybugs, and adult butterflies.