When Life Gives You Lemons⦠Use Them For Lots Of Things! Lemons arenât just good for adding flavor to recipes: They are very useful around the house! Here are some of the best uses for lemons and lemon juice. HOUSEHOLD USES FOR LEMONS For a sore throat or bad breath, gargle with some lemon juice. After a shampoo, rinse your hair with lemon juice to make it shine. Mix the strained juice of a lemon in an eight-ounce glass of warm water. Suck on a lemon to settle an upset stomach. In Your Kitchen Toss used lemons into your garbage disposal to help keep it clean and smelling fresh.