I found out the way most people do — around seventeen, when I started caring what girls thought of me.
I tried what you have probably tried. Deodorizing sprays. Cooling insoles. Bamboo charcoal socks. Each one worked for a few hours, and none of them worked on the actual problem.
What changed it was noticing something about Japan. It is a country where you take your shoes off constantly — homes, restaurants, temples — and where being clean in public sits somewhere close to a moral obligation. If anyone had solved foot odor, it was going to be them. And a surprising number of Japanese people wear toe socks. Not for running. Just as socks.
I bought my first pair in my second year of university. The difference was immediate, and it was not subtle. I have worn toe socks nearly every day for more than ten years since. I got my brother onto them, then my girlfriend, who is now my wife. Nobody has gone back.
Every trip to Japan I buy more — every fiber, every length, every pattern. Which is how I ended up here. After ten years of wearing other people's toe socks I had a fairly specific idea of what the everyday pair should be: fine enough for a dress shoe, made of actual wool rather than a bit of wool and a lot of plastic, built for a Tuesday rather than for a mountain.
That is what ROMATOKI is. It is the pair I wanted and could not buy.