Just had the revolting experience of finding roundworms in chicken poop :( I will be going out tomorrow to buy some wormer, the most prevalent one here in NZ appears to be Avi-verm (Levamisole Hydrochloride 24% w/v as an aqueous solution).
New to chickens and have never had to worm before. I know the poop belonged to one of two birds, as the third was in a broody buster (it's been a trying week). Anyway, I know I have to worm all three, but these are my (possibly silly) questions:
1. Are the eggs I have already collected from the birds (ie. pre-worming them) okay for me to eat still, or could we get roundworms?
2. What else do you do when you worm them? Are you supposed to completely empty coop and clean it (ie. remove and throw away all litter, etc)? My birds free range and I go out most days with a pooper-scooper and pick up all of their deposits as I don't want a yard full of poop. The coop itself is wood-shaving based, and I also take all of the poop out of there daily (I can't do deep litter method as my coop is a really stupid design). Just need to know what to do cleaning wise.
3. The Avi-verm website itself (http://www.jaychem.co.nz/aviverm.aspx) says it is a one dose treatment with a 7 day stand-down period for eggs, but lots of other stuff I have read says to re-dose after 7-10 days, which would result in a total egg stand-down of 17 days or so. Is the second dose necessary?
4. How often am I actually supposed to worm my birds? And if wormers like Avi-verm just kill existing worms, how do you prevent new ones?
Thanks for any and all ideas,