If you own AirPods, have you ever looked up the right way to clean them? It's not with isopropyl alcohol--that stuff can break down adhesives over time. You're actually supposed to clean the mesh parts (the mesh slot on top, the opening where the sound comes out, and the mesh where the stem curves) with micellar water and a child's toothbrush. What's micellar water? Makeup remover. Just be sure to get the right kind. https://support.apple.com/en-us/102672