Pacifier,
My vote is in between #1 and #2. Each time the pacifier drops on the floor, regardless at home or outside, we will rinse it with Hot water (hot water as in to sterilize it).
Connie,
My son used to LURVE his pacifier, can't live with out it. Last time, he also suck his pacifier throughout the whole night. If the pacifier drops out, he will either cry for it or wriggle his hand to find his pacifier. So far we didn't have issue with him sucking pacifier the whole night. We were so worried that he is so depended on his pacifier. When he started to have teeth, his pacifier just worn out every 2 weeks coz he bites it). Then, suddenly one day he just decided to stop taking pacifier.