Earthworms are not insects, nor is there any reason to get rid of them; they are beneficial to the soil. As for other insects, people often use insecticide to get rid of them, but this depends upon the species. To get rid of bedbugs, you have to use heat.
no but roots can be damageable to them but they do not kill earthworms
Potting mix does not kill earthworms.
Yes, diatomaceous earth can harm earthworms if they come into contact with it.
Yes, because earthworms need wet soil to live. Also, the rocks will cut them.
No, they don't. They don't kill any type of creature.
Iodized salt.
Yes, chlorinated water kills earthworms. The worms in question must breathe through their outer layers. The "skin" needs to be kept moist, but waterlogged, with the consequence that too much of any water -- not just chlorinated -- will kill earthworms.
Yes, based on my own experience, seven dust kills earthworms.2nd Answerer says: I concur.
Yes, diatomaceous earth can kill earthworms by dehydrating them. However, its effectiveness in controlling their population may vary depending on factors such as application method, environmental conditions, and the size of the earthworm population.
Table, Kosher, and Sea does. Epsom does not. potting soil kills earthworms
The waste matter from earthworms are nutritious for plants. Earthworms also keep soil loose when they dig and move around the soil. This helps roots and water penetrate through the soil easily. Earthworms are widely encouraged in organic vegetable gardening and are categorized as beneficial animals. It is also claimed that chemical fertilizers and pesticides kill off earthworms thus gardens loose the benefits that these worms bring.
Yes, they will eat the tomato fruit but not the plant.