Eucalyptus Essential Oil is best known for its respiratory effects and relief for congestion. It is highly anti-microbial and is an excellent oil to use during the winter months. Dabbed on carefully with a cotton swab, it can help stop the irritation of a bug bite. It has a dominating scent, but blends well with Lemon, Lime, Cedarwood, Bergamot and Tea Tree essential oils. 1 Year Shelf Life. 1/2 Fluid Ounces.