I posted this in my local BYC page and I didnt recieve any responces I was looking for perhaps you can help me out. So I been doing alot of research on disease and disease preventions and bio security measures as of late. In my research I found an article by DR.Jones it states ""Mycoplasma is present in 75% - 89% of ALL flocks, both commercial and private according to Dr. Scott Jones at the Baron Diagnostic Lab in Wisconsin. If this is true and is the case in common flocks then How does a Flock owner prevent this from happening to them. It says if you take all the preventative measures you can still have this in your flocks. Some people never realize they have it as it takes stress to trigger it. So if studys have proven that 75%-89% of all flocks have this. and it can be transmitted by a bird simply flying by and pooping in the chicken yard. or a mouse scampering in from the pasture to grab a quick easy bite. and Treatment for prevention is limited is there really a substantial way to be that 11% who is clean to me 11% of the world population is by far a long shot. I am very curious as to input Seeing as I do take some pretty serious precations on my farm to prevent bad health in my flocks to include Bootbaths before entering building I now require Slip on plastic sterile booties to be worn and Placed in the burn pit after use. I Do scheduled health prevention policy rules every 3-4 months. and I bleach all waterers and feeders every other Sunday with a 10% bleach solution. I Cull any birds that even hint to show signs of weakness or lack of proper meat to feed conversions. and have eliminated broiler birds from my farm as there 90% carriers of this situation. I use Roccal - D Plus http://www.revivalanimal.com/store/p/2491-Roccal-D-Plus.aspx which is very expensive. We even load up the 25 gallon sprayer and spray the whole 5 acres every 6 months. So my question is simply if I do all that and its still not enough then what else can I do as a preventative measure. I do not have this problem that I know of as of yet. I did send some birds in for testing Just to verify my standings I do try to get birds tested quarter annually. Since I had a big scare at the beginning of my poultry farm that ended being nothing at all. I welcome all input on this matter if anyone has any to add.