Natural repellents are substances derived from plants or other natural sources that help keep pests away. Common examples include essential oils like citronella, peppermint, and eucalyptus, which are often used to deter insects such as mosquitoes and flies. These repellents are popular because they are generally safer for humans and pets compared to synthetic chemicals. Many people prefer natural repellents for their eco-friendliness and lower toxicity. They can be applied directly to the skin or used in diffusers and sprays. Additionally, some natural repellents can be found in household items, such as vinegar and garlic, which also help repel unwanted pests.