Yes, bay leaves repel roaches due to natural insectisides inside of it. Roaches detest the stuff. Crush the leaves and spread them in your kitchen cupboards where you don't want roaches for a...
The electric force will repel as well as attract. A fundamental concept regarding electrostatics is that like charges repel and opposite charges attract. We can also see that the magnetic force can...
Catnip has been confirmed to ward off roaches, and the plant known as haplophyton crooksii is known for its use as a poison, using dried leaves & molasses.