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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.
If your ears are packed with a lifetime of earwax build-up, you'll need about 10-15 refills per ear. If your ears are not packed with a lifetime of earwax, you'll need less refills per ear. The warm water softens and loosens the wax that's stuck on the hair, skin, and eardrum.