The answer to 'natural centipede repellent' is to use essential oils, diatomaceous earth, and other natural deterrents to keep centipedes away from your home. Centipedes are attracted to damp, dark spaces, so focus on eliminating moisture sources and sealing cracks and crevices where they may enter.
Some effective natural repellents include peppermint oil, lemongrass oil, and cedar oil. Apply these around the perimeter of your home, focusing on entry points like windows, doors, and pipes. Diatomaceous earth is also a great natural pesticide that can be sprinkled in areas where you've seen centipedes. Regularly vacuuming and cleaning your home can also help discourage centipedes from taking up residence.