Lemon is a nice addition to teas, beverages, fish dishes and more. However, it also can be used to repel multiple types of pests in several forms. When homeowners notice bugs in their homes, they may immediately run for the pesticide. However, these chemicals are harmful and may endanger your children and pets. Choosing natural remedies to alleviate the problem may be a better initial choice. Consider these tips on how to use lemon to keep pests such as spiders and ants away.