I'm fairly new to this chicken thing, so I'm not sure when to be worries or just brush things off. Lately it has been very rainy in TX, accompanied by an increase in temperature, generally around the lower 90's. My hens have plenty of shade and often get to free range on our 1/5 acre backyard. Before leaving on vacation last week I treated their water with Wazine-7 for a 2 day period. I tossed all the eggs for ten days prior. It has been over two weeks since then and my egg production has dropped to zero over the past 3 days. I have 7 hens, so I figure something is amiss. Are there any other medications I should give them or environmental factors I can alter to make them more likely to get back to laying? Should I be alarmed that none of my 7 have lain a single egg in the past 3 days? Any help is much appreciated. They're all different breeds, btw. About a year and a half old.