Originally Posted by siege2050

Sweet oil, I think its made from olive oil or something, it's used for earaches, etc. Olive oil might work. I had a bunch of fungus gnats go crazy in here from the plants I brought in for winter, and I noticed they were sticking to and dying on the bottle cap of the oil. I had knocked the bottle over once and it had oil on top of the lid. The adult gnats seem to like the smell or something, and they can't escape even just a little of it.