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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.
Use hearing protection. Foam earplugs can reduce your noise exposure by about 20 decibels, but only if you insert them properly. Here's how: Roll the earplug gently between your fingers to make it long and thin, then reach over your head to lift your ear with one hand while inserting the earplug with the other.