Our heart shaped wax melts supplied in wholesale bags of 15 ready for you to repackage yourself, using the same high quality wax used in all of our wax products. Citronella oil has a powerful citrus aroma, bursting with a crisp, lemon and grassy scent. It is also a renowned plant-based insect repellent, keep the insects at bay with your candles and melts. Citronella oil has a powerful citrus aroma, bursting with a crisp, lemon and grassy scent. It is also a renowned plant-based insect repellent, keep the insects at bay with your candles and melts.