Bug Repellant is useful for traversing insect-filled caves and swamp areas, though some creatures may still detect or attack you. It helps with taming creatures such as Arthropluera, Araneo, Mantis, Giant Bees, and Onyc, and may also work for passive-taming Mantas. Craft it in a Mortar and Pestle rather than a Cooking Pot, and note that its effectiveness can vary by creature or platform.