Top 5 Best Mosquito Coils | Flying Insect Repellent
Mosquito coils usually contain one main active ingredient; among the most commonly used are allethrin (or d-trans-allethrin, a synthetic pyrethroid), pyrethrum, esbiothrin and citronella. As well as mosquitos, the coils also repel other flying insects, such as flies and wasps; and also bees and butterflies.
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