19-1902 Contact Cleaner, DE-OX-ID, Oxidation Remover, Bottle, 2fl.oz (US)

My audiologist uses this product. The battery compartment of my hearing air rusts and so the hearing aid stops working. This product with a Q-tip removes that rust to restore my hearing air to service.

This stuff gets harder to find every time. But I swear by it for cleaning and protecting wires and connections. Much better than the aerosol.

Outstanding product!