Our cockroach control box contains camphor tree oil, pepper essential oil, peppermint extract. It can effectively repel cockroaches and give you a clean home. A variety of essential oils work together to form a comprehensive protection network. Its use method is very simple: 1. Open the lid, take out the white washer inside, tighten the lid; 2. Put it in an area frequented by cockroaches. Essential oils continue to evaporate and do not need to be replaced frequently. Small and portable, can be placed in any corner.