I have a couple broody hens that hatched 4 chicks in the last couple days. Today when I removed the newly laid eggs from the others I found a couple mites crawling on them. I'm pretty sure they are northern fowl mites as they are much smaller than the red mites. I have elector psp but is it safe for the chicks? I will not use permetherin as we have several cats and I'm not taking any chances with them, so please hold that suggestion.