Sevin, a carbayl-based product, is intended for killing off grubs in a lawn but has been found to reduce earthworm populations as well when used at the recommended dosage amounts for grubs. Other chemicals that are known to be toxic to earthworms include diazinon, Merit (imicdacloprid) and Dursban (chlorpyrifos).
What kills worms in the ground?
Use a carbamate insecticide to kill the earthworms. Some carbamate insecticides include carbaryl (Sevin), bendiocarb (Turcam) and propoxure (Baygon). Use about as much insecticide to kill the earthworms as you would to kill grubs, which is generally 4 to 8 lb.
Why do I have worms in my yard?
Worm activity and its impact on lawns is usually experienced most during wetter conditions as soils are more easily travelled when soft. Higher water tables experienced in wetter seasons also drive the worms up through the soil profile. As a result, worms are often most active in autumn and through warmer winters.
How do I stop worm casts on my lawn?
Natural ways to control worms casts1Leave your lawn longer. A longer grass brings a healthier lawn. ... 2Reduce the worm food source. Keep the leaves off your lawn in the winter. ... 3Improve the drainage. Worms tend to put up more casts and seem to be more active in wetter soils. ... 4Brush casts away when they appear.Should you try to control worm casts on your lawn?
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