=/ Simply just toss them away or give them to somebody who could use the unhealthy grease and teeth breaking sugars =P
Then, never buy them ever again.
I haven't drank soda or eaten artificial candy (just had chocolate now and then) for about 4 years now.
I still have a chip eating monster in me sometimes =/ I will probably give that up too sometime. It isn't that hard as long as the stuff aren't around ya.