You can place drops of your favorite essential oil on your LooHoos to easily scent your fresh laundry. Just add a few drops and toss the LooHoos into your laundry. In order to infuse the most amount of fragrance, it's best to add the essential oil in the last 5 to 10 minutes of your dry cycle.Have fun selecting the best oil combination for your laundry. You could try lavender for your sheets and lemon for your towels.Some of our customers favorite essential oils to use on their LooHoo Wool Dryer Balls include: Lemon, Sandalwood, Lavender, Purification, Purify, Bergamot, Orange, Peace & Calming, Lime, Geranium, and Spearmint.