Bubba and Sissy are little turds when it comes to new collar etc. I usually put it on them and rub it on them for a few seconds, tell them they are pretty (handsome), take it right off. Then I let them smell it and say, "is this yours" and let them smell it. I do that a couple of times and finally they are ok with it.
Be careful with these beads. I'm afraid mine would eat them