Lice are bugs and as someone said above, mites are so tiny but there will be many of them so for example, when cats have ear mites, the quantity makes it look like brown wax.
Whatever you have, you have to wash all the sheets, the comforter, all the bedding, too.
You can buy stuff on Amazon or over the counter for lice. Not sure about mites. You can also hire someone to deal with the lice for you but it’s a lot of money (a few hundred).
If you are on FB, there may be some groups for people who raise chickens. If you have a problem from mites, there are without a doubt other people who have experienced the same thing.