I've had almost no eggs for 5 days so I assumed it was the heat as this is thier first summer. So, I added a small pool, a 2nd waterer, a coop fan and upped thier favorite treats. Still, no eggs n no one is molting so the only other thing I haven't looked for is mites. They hens are 8 mos old and ive never dusted them :-/. Should I do that now or wait til fall?