10 basic rules for mosquito repellents containing DEET: what to do and what not to do?

What are the 10 basic rules for using DEET mosquito and insect repellent?

• Avoid excessive use and overdosing.
• The higher the DEET percentage, the longer the protection, but above 50%, longer protection is not guaranteed.
• Apply a small amount to an arm or leg the first time to test your skin's reaction before applying.
• Wash clothing containing DEET before wearing it again.
• Do not spray on your face; apply it to your hand first and then apply gently (or use a stick). Avoid areas around the eyes, mouth, and nose.
• Do not use on irritated skin.
• Do not use under clothing.
• Do not spray on plastic (e.g., watch straps), synthetic, leather, or painted materials.
• Do not spray in enclosed spaces.
• Do not apply DEET to children's hands to avoid contact with mouth and eyes. As a parent, apply DEET to young children.