Home remedy with vinegar dish soap and sugar for gnats?

[1] The ratio of the three depends upon how strong/weak and how fast/superfast this home remedy is intended to work. A popular ratio tends to be 1 cup vinegar, which can be diluted by water, to 1 tablespoon sugar and 1 teaspoon dish soap. The idea is that the gnats are attracted to the sugar and the vinegar. The soap then kills and helps drown them, by lessening the surface tension of the vinegar or the vinegar and water mixture. [2] Just a soap and water mixture works. In fact, that's basically what the organic control ka insecticidal soap is made up of.