 You can put all that into a mathematical formula, how many that you've caught that have been marked and how many that are new, and you can come up with a population. So the way we do that, we call it hair snares, but it's really a two-strand barbed wire fence about the square footage of, oh, let's say your pickup truck. And the bear walks through the barbed wire to get a donut. We have a scent attracting, and usually two donuts hung on a string in the middle of the snare.