WAX GUARDS Routine replacement of hearing aid wax guards helps to ensure optimal hearing aid performance. Oticon ProWax $6.99 Oticon ProWax miniFit Wax Guards $6.99 Phonak Cerustop Wax Guards $2.49 Siemens HF4 Pro Wax Guards $6.50 – $12.99 Starkey Hear Clear $2.49 Widex NanoCare $6.50