Update

I keep applying the Listerine to my older daughter, and until now she doesn't have any single bite. When one day I forgot to apply, she got 3 bites in her legs and 1 bite in her arm. Now, whenever I forgot to apply, she reminds me.

Again, the only Listerine that works is the brown color. Some said have to dilute with water, other said have to mix with vinegar, but I found that it works just apply as it is.