Hello. I am looking at Oxine AH or Varkin S to disinfect my coop/run/yard. I am not sure of the drying time and or if it needs to be rinsed off. I lost one chicken suddenly over the weekend with no symptoms and another one this morning has started limping. She has been gasping and sneezing here recently and I thought it was gapeworm so I am giving her safegard dewormer but it doesnt seem to be clearing it up. I thought maybe coccidia and gave corid but not that either. The other option I have is to use denegard but I dont want to give my whole flock denegard if its not necessary. Any help on what to do for her or if culling is whats needed? Also what disinfectant to use as I have 2 dogs and chickens (obviously) and some chickens that need to go outside. The other chickens I have are doing fine, none showing symptoms or anythign so I am at a loss.