Thankfully I've never had them, not sure if we get them in the US. I would burn the coop and replace with a spiffy new one...
I think I’m going to have to, it’s seriously depressing when you spend so much time cleaning & debugging only for them to take over again. This prolonged warm & dry weather we are having really does not help either. I’m going to start looking for a new coop I think but I will need to hang on to the end of the month as I’ve already spent my extra cash on a new fly rug for Harry horse.