You can get this: 100 pairs for like $25
You really should throw them away. They are porous so cleaning is not going to work well. They are meant to be disposable.
Or get longer-term ones if you want better quality sound for music. I have a pair from EarPiece that I use. They have much better sound distribution, adjustable components to change the protection level, and they can be cleaned with alcohol. Plus they come with a nice case and an extra plug in a separate compartment in case you lose one while at an event.