Does that mean you are going to help me clean the nasty bedding out of the coop tomorrow?! Lol.I had a lot of flies in my coops and also had mites. I spayed permethrin in the coops to get rid of the mites and an added bonus was it also got rid of the flies. I had to do repeated sprays to kill the mites as they hatched. The flies were terrible but not no more and no egg withdrawal period.