Clean, DIY, Home & Life 10 Ways to Clean With Essential Oils July 7, 2016 / Using a 16-ounce spray bottle, use four drops of eucalyptus essential oil and four drops of tea tree oil (melaleuca) with warm water. This mixture can eliminate shower curtain scum. Spray this onto your shower for natural mold killing action. Pages: 1 2 3 4 5 6 7 8 9 10 11