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Answers. Best Answer: It's fine to reuse ear plugs as long as you clean your ears each time before inserting them. You'll need to replace them occasionally, depending on how often they're used. I've found that the yellow cylindrical ones work better and stay clean longer than the standard orange ones.
Another common problem is that the back piece of the earring has fallen off. Unless you have only one pair of earrings that are held on with a backing, this is really not a problem. Just take the back piece from another earring and use it on this one. The earrings can share backings, since you will wear only one pair at a time! If the backing doesn't fit, look at a few more of different sizes and shapes. There is absolutely no need for the back of one earring to look like the back of the other.