Moth repellent is a product used to keep moths away from fabrics and other materials. Two common ingredients used in moth repellent are CAMPHOR and CEDAR, both of which have seven and five letters respectively. CAMPHOR is a white crystalline substance derived from the wood of the CAMPHOR tree, while CEDAR is an aromatic wood from the pine family. Both of these ingredients are known for their strong odors, which can help to repel moths.