Do most of you just de-worm on a schedule, rather than having fecal samples checked? I get fecals checked a few times a year and my hens have never been positive for anything, so I have never de-wormed. I operate the same way w/ my dogs and horses -- there is no reason to give toxic chemicals if there is nothing wrong in the first place. I can see if one has a lot of chickens that this wouldn't work, but for you guys w/ small flocks like mine (currently 2, used to be 3), do you randomly worm w/out checking first? Are there any chicken parasites that will not show up on a fecal?