Only use the one-piece, dishwasher-safe variety.
Always have extras on hand, and make sure a few are identical to his or her favorite.
Clean the pacifier early and often. Wash it before the first use, soak it in equal parts white vinegar and water for a few minutes every day (or at least a few times a week), and don’t rinse the pacifier in your own mouth, mom. (That's germy and, well, gross.)
Replace pacifiers frequently—worn-out nipples can break off and become a choking hazard.
Don't use pacifier clips that are attached to strings or straps long enough to wrap around baby's neck.
Don't be a pacifier-popper. If the pacifier falls out of baby's mouth while he or she's sleeping, don’t put it back in.
Know when to say when. Most kids lose interest between ages 2 and 4—if yours doesn't, talk to your pediatrician. Beware, though—your child (and you) may have to go cold turkey!