When baby tosses it . Some babies show no real interest in pacifiers & will not miss it if you don't bring it along. Others have a tight self soothing bond & should be left alone.Clipping it to an outfit with a ribbon prevents baby from using the mouth as a pocket.More time out of the mouth decreases interest.A ziploc bag can help later.Sudden removal by a parent figure sets up a distrust that can last a lifetime.
Best time before . Developmentally speaking, before age one is easiest. Based on personal experience and that of friends, if you miss that window, around age three worked well for us as we could tell our older son that the "binky fairy" was coming. No matter when you choose, i would recommend restricting pacifier use to sleep time only for a while prior to getting rid of it entirely.