Acidified copper sulfate for canker

[OrpingtonManiac]

Hazel's (chocolate orpington) canker has returned once again, and we've bought metronidazole and acidified copper sulfate, but I have a few questions regarding this. Firstly, should we give it to all of the flock? 2 others have very mild canker which is getting smaller, so we're not getting any metronidazole for them (they've already had 3 doses in 2025). Secondly, are there any negative side effects of using acidified copper sulfate? Finally, how long should we give it to them for?

Thank you in advance!

 

[Debbie292d]

I really should find another source for info on this, but this puts it so well. It's a reply in the new member's forum.

https://www.backyardchickens.com/threads/howdy-byc.1628559/post-27813675

 

[OrpingtonManiac]

I really should find another source for info on this, but this puts it so well. It's a reply in the new member's forum.

https://www.backyardchickens.com/threads/howdy-byc.1628559/post-27813675

That’s really helpful, thank you!