click to see all 31 great tips- there's even a FREE PRINTABLE of all 31 ideas!! genius essential oil tip #31 -- Do you ever forget and leave your laundry in the wash for too long? I know I do. Simply add 2-3 drops of lemon essential oil to the laundry and re-wash. And voila, laundry is as good as new! Not only does it smell fresh and clean, but it IS fresh and clean.