What bugs does lemon get rid of?

Could you elaborate on the types of pests that lemons are effective in deterring or eliminating? Are there specific insects, such as aphids or spider mites, that are known to be repelled by the scent or acidity of lemons? Additionally, are there any pests that lemon might actually attract, and if so, what precautions should be taken to avoid this? I'm particularly interested in learning about the scientific rationale behind why lemons are effective against certain pests and not others.