What smells do earwigs hate the most? Earwigs hate strong scents that act as natural repellents, including peppermint, eucalyptus, tea tree, lavender, cedarwood, citrus, cinnamon, and clove. Peppermint oil with strong menthol scent is most hated and effective, used as spray diluted with water around entry points, baseboards, windows, doors, and damp areas where earwigs seen. Eucalyptus and tea tree oil also strongly repel. Lavender scent with dried sachets or oil deters. Cedar oil and cedar blocks contain natural insect repellent compounds hated by earwigs. Citrus peels and lemon, orange oils with strong citrus smell repel. Cinnamon and clove strong spices deter. Vinegar smell also mildly deters. To use, place cotton balls soaked in essential oils in cracks, entry points, basements, bathrooms, or spray diluted oils regularly, as scent fades. These smells disrupt their ability to find shelter and make environment unpleasant, helping repel as part of integrated control with reducing moisture, sealing cracks, decluttering, and removing leaf litter, mulch, and wood piles near foundation that provide shelter for earwigs.
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