need fenben dosage advice

I have a skin infestation of some sort that has almost completely settled in my ears (a result of soak baths, maybe essential oils too). I can't get it out. I have cut one ear half off trying to remove them.
I've taken albendazole/Valbazen in the past, also ivermectin/Doromectin and DEC/Dimmitrol, and used various topicals.
I started fenbendazole/Panacur paste yesterday. I am 110lbs ~ 50kg. Based on 200-pound people taking 5mg per dose, I figure my dosage to be 3.125mg/day. Can someone confirm that this is correct? and that a bit over 5mg (6.25mg) would constitute a double dose for me?
Then, does the 250 mark equal 5mg or 6.25mg (6.25 X 4 = 25 grams.)
Thanks in advance for your help. Tweet