I am having a really hard spring. First I discovered mites at night in the coop. I dusted the birds with Sevin, cleaned out the coop, sprayed it with bleach, with a natural insecticide, and then some days later I sprayed it all again with Sevin spray. 10 days after dusting the birds, I used pour-on Eprinex, .5 cc per bird. I mainly used Eprinex for mite control. And now, 10 days or so after using the Eprinex, I just saw this morning that one of the hens had diarrhea, and when I looked closely, I could see some tiny white worms wiggling, maybe 1/4 to 1/2" long. Cecal worms maybe? Should I redose with Eprinex today? I was going to order Valbazen last week, but then figured - eh, I never saw any worms, the dust and the Eprinex should have taken care of the mites, and I don't know how difficult it is to use an oral wormer. Anyway, it's been a really, really wet spring. There is mud/shavings all near the chicken coop. This particular hen I have seen scratching in that mud and it doesn't seem like a healthy thing to do. As soon as it dries up a little, I'm going to fix that area. I suspect that's where she might have gotten this worm infestation, but it could also be all those great earthworms they're finding.