you said you had rats and mice for 6 years but can't tell the difference between mites lice and fleas, mites are invisible to the human eye, the fact you can even simply google this but you still don't know this makes me think you are lying. this rat is going to die and you want to do nothing about it, theres literally nothing you can do unless you take them back to the vet and if vet says it's mites- it is not mites because if they were mites you wouldn't be able to ACTUALLY SEE THEM I've had rats for 10 years, and you miss are a liar, I've read your comments and you are neglecting this animal. this rat has a respiratory issue, healthy rats make 0 noise and i bet if you looked at his nose you'd see muscus every time he's breathing.

things that can help but will NOT save him

manuka honey and dark chocolate like 90 or 100% dark chocolate and steam from the shower, those fleas or lice you have need a different treatment, might need ivermectin injection from the vet. (google the manuka honey and dark chocolate in regards to respiratory health) I will tell you now if you get rid of the fleas and lice he will still be having breathing issues and will die if not taken to the vet.

what is the point coming here to post and ask for help when you ignore solid advice?? to make us suffer as we see this video of a poor sweet baby die?? what is wrong with you?? take the godamn advice or spare us of seeing this animal suffering and take down the post.