I'm new to chickens, and wondered the same thing. But I have been THRILLED with the EASE of my new hen house. Following suggestions I've heard elsewhere, this is what I've done:
1) Use the deep-bedding method. I have a wood floor and use 3-4" of pine shavings. I stir the shavings every couple of days, and everything stays DRY and odorless. I top off with extra bedding if the old stuff is starting to break down too much. I stripped the bedding once, after about 6 weeks, just 'cause I felt like I shoud. It definitely didn't need it. According to those who use this method, you should only have to replace the bedding every six months!!!
2) Have NOTHING inside the coop the chickens can sit on and poop all over. My hen house is a 4x8 ft square (I have 4 hens, but will be getting more). The feeder is suspended from the ceiling (I used a trailer tie from my horse trailer). The waterer sits on top of a stack of bricks. The girls can get water, but they can't stand on/in the waterer. The nest box is accessible from inside the coop, but hangs outside of it--so the hens can't sit on top of it.
3) I have a 2x3" roost pole. Poop falls into the bedding below--and I just stir it up.
I'm thoroughly convinced that my coop will only really need to be cleaned every few months. And cleaning just means forking out the old bedding and putting in new stuff. The floor stays clean and dry under the bedding.
I've wanted chickens for years, but I was afraid to get them because of the mess. I can't tell you how happy I am with my CLEAN chicken coop.
(My house is a mess, but that's another story!)