The OP asked a simple question in a respectful way and deserves the same in the response.
We don't know if he wants to dispose of 5 or 5,000 caps. We don't know if they are #12, #11. #10, musket or whatever. We have no knowledge as to why he wants to dispose of them; they could be bad or not but they belong to him alone. We all (should ) know he cannot mail them to anyone. There may not be anyone near him to give them to. He may no longer have a caplock. There may be children and he, or the wife, does not want them in the house. All any of us do know from his post is that he wants to dispose of them in a safe, responsible manner and he would appreciate an answer as to how go about that. They are his and his alone to do with as he sees fit regardless of what any of us would do with them.