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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.
First try re-reading the directions, then apply a fresh pair of earplugs, making sure your hands and ears are clean and dry. Moldable silicone earplugs are designed to stick to the surface of a clean, dry ear.