My lo uses a pacifier at night but after falling asleep needs it back in his mouth he will wake up when it does fall out. My husband is the one who keeps giving it to him. He will not stop. My husband does not understand that the baby does this at night. The paci does distract him from all his arm movement that wakes him.
When I thought it was time for my daughter to stop having them I used scissors to cut a slit into the top of them. She'd put it in her mouth, take it out, look at it funny, and not want it anymore. She was old enough to throw it away herself. I slowly did that with all of them until they were just gone. Was easy :p
the older two i threw them out at a year. the younger one was less than a year, now that i think about it. i think cutting a slit in it is the better idea, because they sometimes try and steal them from the sibling younger than them. but if you cut a slit and they make a conscious choice that they do not like them anymore, then you won't have a problem with them stealing them. at least, that's how my brain thinks. good luck!
My kids all stopped using them on their own...probably by around 6 months? Maybe slightly earlier. I personally wouldn't take one away until closer to 18 months if it was being used to help self soothe.