Honestly, why do you sleep with it? Not incense! Harmful to human body. Containing naphthalene or p-dichlorobenzene, dichlorobenzene is toxic. Although the "smelly ball" on the market is no longer fragrant, it is still toxic because of its chemical components to prevent insects, which will cause burnout, dizziness, headache and diarrhea. Use clothes as little as possible, especially for pregnant women. If clothes are afraid of bugs, you can put a bar of soap and wrap it in cloth or paper towels.