@bobhoke You do realize Marek's comes from wild birds and can be tracked on clothes and shoes if you were in contact with other infected poultry... It has nothing to do with cleaning your coop.
Marek's is not something that you can prevent by cleaning your coop well or taking very good care of your flock, which everybody who has commented that they've had it does!
Calling people lazy because their birds caught something that wild birds carry is quite rude. There is no way to prevent contact with wild birds unless you put your chickens in a bubble. Wild birds live all throughout this world and there is no way to prevent the spread of this disease.
You can get the vaccinations which doesn't prevent the disease It just helps with the symptoms so that you do not lose your flock. Your flock will still become infected.
When you get this disease many people have to kill the infected birds to try to prevent the spread of it to their flock. It's not something to be joking around about or making rude comments about because many people have lost an entire flock due to this disease that cannot be prevented being clean like you suggested.
Please read up on the disease before you make such comments.
If you continue to make comments like this on this thread, your comments will be removed.