A clean house is a fresh-smelling house, and it's key to keep artificial fragrances and chemicals at bay to achieve this. One natural essential oil that packs a powerful punch is eucalyptus oil. Eucalyptus has antibacterial and antifungal properties, plus it has a naturally pleasing scent. When polishing wood furniture or floors, add two tablespoons of eucalyptus oil to a gallon of warm water. Then polish, mop and clean away. It'll disinfect, clean and deodorize the home all at the same time.