Go to the Bamboo Society website and carefully choose your variety. Bamboo is terribly invasive can take over your whole property and spread to your neighbors. Once established it's nearly impossible to eradicate.
I would avoid the permethrin. There's little benefit vs the continued exposure to the pesticide. Give your birds a good dust bathing space and add some diatomaceous earth. You won't have a mite problem.
You could sink some piers into the ground to bolt the coop to. Just sitting an elevated coop on cement blocks is not a good idea because the structure is not heavy (as buildings go) and a strong wind could blow it off the blocks. If you put in piers and leveled them across the top you could...
I would think that the raccoons would be stronger and smarter than a coyote so if you stop the coon the coyote won't be a problem. I'd be interested in other opinions.
I don't think, from what I've read (admittedly there is not much out there), that it has to be for poultry. It just has to be food grade. The problem is that to make much difference the quantity required would be prohibitively expensive if the products available for human use were used.
Is anyone familiar with using oregano oil as a supplement in feed?
http://www.nytimes.com/2012/12/26/science/chicken-farms-try-oregano-as-antibiotic-substitute.html?pagewanted=all
Here is the product:
http://www.ropapharm.com/global/animal-species/poultry
Thank you. My guineas use a pop hole with an automatic door and are outside free ranging everyday. I'm thinking that opening won't be big enough for a full-grown turkey so I have to think about how the tom would come and go. I'm not able to open and close the door everyday.