i have 4 hens that i got from the neighbors who abandoned them and i cleaned out a 8 x 10 wood dog house with an attached run and filled the coop with pine shavings and put them in there almost 2 months ago. About 3 weeks ago i let them out to free range during the day, needless to say it keeps the coop/run much cleaner, the run is concrete so i hose it off daily (they have a kids plastic swimming pool filled with dirt that they hang out in) and the coop i just scoop the poop and occasionally have put fresh bedding in but have never just cleaned the entire thing out as they've only been there 2months. Should i take the entire pine shavings out and replace? Thinking of spraying with Manna Pro Poultry Protector for mites, etc. I do NOT KNOW yet if they have mites as i'll have to go out there when they roost and check, only 2 will let me kind of pet them, this will be an ordeal and stressful for them for me to check for mites but i have to do it, i also imagine the concrete floor of the run, although probably not ideal for chickens, helps to keep any infestation down but i need to know how to properly care for the coop now that i have hens! (Also thinking of possibly putting up a "poop bar" to catch underneath the roost to keep it cleaner, hopefully?) Thanks for any input and help and advice, i want to do what's right by my hens health but have to keep it relatively simple!!