Hi I am quite new to keeping chickens and have raised 2 roosters and 3 hens from chicks, I recently had to get rid of the roosters due to complaints from the neighbours, however the predicament I am now in one of the hens has two eggs she has been keeping warm for 2 weeks now and since checking one of them is fertile and has a chick forming inside. At the same time as checking with torchlight I have also noticed red mites on the hen. Problem is how can I treat the red more problem without risking harm to the egg/chick?? I purchased some pestene powder yesterday and lightly sprinkled it around the nest however 10 minutes later removed all of the nesting material after reading on here it can be harmful. How harmful are the mites to chicks? How harmful is the powder to chicks?