I'm not really sure...gift from a 5 year old... who out grew it...and insisted it belonged in the coop with the rest of the birds...![]()
You have to listen to a 5 year old...they know what's what!

That picture was taken after I dusted the coop!
Removing dust the easy way.
"Poop sculptures" are buried in the deep bedding.
Walls below roosting bars are covered with removable wallcovering or feed bags cut open.
They are tossed and replaced the same time as the deep bedding, about once per year. Easy.
Walls above the roosting bars don't get "stained", just dusty.
I don't scrub anything...
Love the idea of using empty feed bags on the lower part of the walls, very nifty! I wonder if my girls would try to eat the bags (voracious little raptors).