I ordered a gallon of Oxine, with no intention of fogging. However, when I checked out the fogger, it said I needed to order a Citric Acid activator to add to the Oxine before use. Question: Do I need the Citric Acid to use the Oxine if im not going to fog? *I figured it out!!* The answer is no, Citric Acid is not recommended even with fogging.