Black Gnat is a new product that contains 15 different essential oils that work together synergetic to repell southern gnats and no see-ums. This is a wholesale product that cost $70.00 for a case of 10 - 4oz bottles. Suggested retail is $10 to $12 per bottle. Shipping cost is $5.00. The case is actually an attractive slant face box. I work outside every weekday in South Georgia and Black Gnat is by far the best because it last longer and the aroma is so pleasant.