No problemo Three Silkies May I recommend one of the Aussie Threads: https://www.backyardchickens.com/t/...-that-funny-little-island/18200#post_14517679 there are other South Australians regularly posting. I strip the coop down completely and scrub with soap and water, sun dry and then drench everything, walls, roosts etc with a Yates Success mix (at the recommendation of a breeder on the Aussie thread). When that dries, the gals are safe to go back in. The diluted Neem Oil does not kill the mites but it apparently upsets their breeding cycle. This is also applied to the walls, roosts etc. In the nest box, I use Vetafarm Furry Friends Mini Straw Bale which is pest resistant. It is about $9 for a small bale which actually expands out and easily fills two nest boxes for two changes. I also use Pestene in the nest boxes and on the chickens if required. Pestene itself can open a whole can of worms with regards to whether it is a good product or not and I have been advised that it may be linked to Parkinson's disease but I will leave the debate to the experts; just sharing what I do You are correct that a good dust bath helps I also battled the local dove population and as the gals have lots of hiding places when free ranging (supervised), I close the coop and run when they are out to also keep the doves, crows and miner birds out.