The shop and coop are maybe 30' apart here, and they used to have day access to the area all the way around the chop, as well as inside. We found they got used to the noise, and paid it no attention. We had one hen who made her nest and laid her daily egg in the shop. Of course, we had some poop and feathers in the shop, but not that much of it. Apparently they preferred being in their own coop where the food and water are, or else outdoors. And believe me, that shop gets plenty noisy from machines sometimes.