Quoting *MommaLindz*:" My DD was the same age, and it only took a couple days. Occasionally, she would ask and I'd tell her ... [snip!] ... it to him, and if so, just reiterate how important it is to you that he no longer be given one. It never hurts to ask :-)"
Quoting Mr's&Family*:" First off, throw out every single pacifier in your home. Out of sight, out of mind. Second, ask the sitter ... [snip!] ... one. If he goes to her when she's baby sitting, ask her nicely to toss them all so he doesn't happen to see one and want one."