Not to sway you or anyone from using this, but our coop doesn't stink, ever, and we can usually walk barefoot in there if we wanted to (but we don't) because the poop is dried up. We use horse bedding pellets, and only change them out in the spring. 3-4 inches in an 8x12 coop takes around 3 bags at $8/40# bag so about $24 per year. We do nothing to them and have used them for years and been very happy with them. With two hens, you might have to take a stick and stir the pellets up once in a while as you may not have enough traffic scratching around in it. It's just a thought if you've not decided yet.