How do you discipline a puppy?

[Sowa]

As I recall, my trainer told me to always "sweeten the deal" when they are doing something bad. So if she is eating something she shouldn't, say no and at the same time, give her something she should chew on...i.e. a toy, a bone, etc.

I do that, and she usually goes back to what she was originally doing after a few seconds or when I stop playing with her and the toy.