 Right. So when I mentioned that it penetrates the metal. So if you picture it in your head and you think of a dry slate and then you drop some water, even a paper towel is a good analogy. If you put a drop on a paper towel, it spreads right out and you can kind of see it penetrating. And then our product is going to continue to do that so it can continue working, continue creeping throughout, and then it can get anywhere at that point.