Mites on chicks!

[Thataussielady]

I have recently got a few chicks who are 3 weeks old. I was looking at the head and saw some mites crawling around. They look orange but I'm not too sure on the type. I have poison which I used on my other hens when they had mites a few months ago but I'm not too sure about chicks.
Can anyone please help!

 

[welasharon]

I've used a tiny bit of seven dust on small chicks. It doesn't take many mites to run them down.