I went ahead and stopped the Corid yesterday, it was day 6. I was going to do 7 days since I under medicated the first day and a half but after this I felt I needed to stop so I could start getting vitamins back in them. I'm scared to deworm them so close to using Corid.
I bought the fenbendazole liquid for goats but now thinking I want to do the fenbendazole aqua-sol so its not so much at once.
It's up to you whether or not you want to buy expensive Aqua Sol. It's still Fenbendazole, just a different solution that is meant to go into water and will treat Roundworms Only at the dose they recommend.1) is it safe for me to order the fenbendazole aqua-sol and wait until it comes in to worm them, or is this an ASAP kind of thing?
2) Can I add poultry cell with the dewormer in their water?
If you are finding expelled roundworms, then at least one hen likely has an overload.
Personally, I'd just go ahead and treat each bird with the Safeguard liquid goat dewormer if that's what is on hand. It's much more economical to use.
There're no contraindications with using Corid and Fenbendazole together, so imho, there's no need to do a waiting period between the two.
Poultry cell can be added to the drinking water for a couple of days if you are worried that the Corid made them deficient, but it's extremely unlikely it did.