What country are you in? I just looked up that neopitroid powder and it's not permitted in Croatia and stated can be harmful to birds. This is hard to decipher but here's the link where I got it from. I've never heard of it in the States.
Do you have access to permethrin powder? Most...
I had one get like that and didn't get over it for a week so I brought her in the house. I had FishMox Amoxicillin I gave her for a week and she got over it. None of the others were sick but her.
I know most don't believe in VetRX which is chicken Vicks is all, but I used that too. I...