That is our 4th coyote at that set. It is basically a dirt hole with a stump as a backing. The drain pipe has been used just to funnel them in. Last year I noticed, when we had snow, that the coyotes would whiz on that drain pipe. So, I used it in the setup as well. I find in interesting that 2 out of the 4 ended up crawling through the drain somehow. Another good note is the drain actually keeps them from going nuts.