A tick is noticeable larger, you can easily see all of the legs even on the Larva
Mites on the other hand are tiny, here is a picture of one on a snake
and another mite with a finger next to it
There is a big difference between ticks and mites, as for treating... I'm not the man for the job
I know my ticks, when i go out hunting and come back for the day, i have found as many as 23 ticks on me from one day, sometimes you don't find them for a couple days too, that's the part i don't like lol... Oh well, something you have to get use to in northern MN lol