Call Today (510) 629-6013 20126 Stanton Avenue #205 Castro Valley, CA 94546 When you invest in hearing aids, you want to do all you can to ensure that they provide quality hearing assistance for many years. Caring for them properly is the first step to ensuring that they last as long as they should. When it comes to caring for hearing devices, there are some tasks you can perform at home, while others should be performed by a hearing aid provider.