I am retired in France and am new to chickens (and postings!). Have last year adopted a couple of red barnyard hens with health problems - a steep learning curve involving lots of research! Have added two silkie chicks to the flock this year. Really enjoying things, until now when I discovered red mites in the coop! After further research have sprayed it with vinegar and then with a mix of water, oil and detergent. Still they come back. Am about to whitewash the coop and then start with diatomaceous earth. Fingers crossed. Any advice from you good people?