While lemon has a pleasant aroma, there is no scientific evidence to suggest that it can effectively repel or deter termites. Lemon juice or lemon-based solutions may have a temporary masking effect on the odor of wood, potentially making it less attractive to termites. However, this effect is minimal and not a reliable method for long-term termite prevention or eradication. It is important to rely on proven termite control techniques, such as professional treatments, preventive measures, and regular inspections, for effective termite management.