Need info on Garter snakes

[Senator Gracken]

I was approached today by an employee of an animal santuary thing here in Red Deer (never been to it so i'm not sure) and was asked about a bunch of stuff concerning a garter snake that someone had dropped off there. They said it has lost weight, is excreting an oily black substance(I assume this is musk), and didnt have a proper shed - qoute : "he didnt shed well and most of his face didnt come off , also its kinda like really bad dandruff"

well since I havent kept garters before I thought Id get a quick rundown from you guys oh and they didn't burmuate (sp?) the little guy for the winter AND they are feeding it meal worms! He wants me to go there this weekend to teach them basic husbandry and so naturally I came to you. So ya please help in anyway possible. (I know basics for boas and pythons but not garters)

Joseph Elliott