Almost every skunk you would find for sale should be descented. It isn't anything to worry about. Skunks enjoy a varied diet. It should consist of vegetables, low fat yogurt, cottage cheese, fruit, graham crackers and low sugar cereal. One or Pro Plan adult dog food.
Skunks are naturally corner trained.
If you let the skunk pick a corner and you place a litter box there, they will automatically go there. Most vets recommend that you give them the same vaccines that you would give to a dog or cat. They will most definitely need the rabies vaccination, if nothing else. The breeding farm does not do this so will most likely have to. Skunks are pets for a certain type of person.