Cerustop wax guards Summary Push-on wax filter guards against wax intrusion into hearing aid. Why use filters? Ear wax is one of the main causes of hearing aid malfunction. During daily use, ear wax can work its way into the sound outlet of your hearing aid and partially or completely block the passage of sound. Completely-In-The-Canal (CIC) instruments are especially vulnerable to wax problems due to their placement deep in the ear canal. By using a wax guard you can protect your CIC instruments from ear wax, thereby minimizing ear wax-related problems. If you are a patient of The Hearing Care Centre and have a valid hearing aid warranty, you are entitled to free of charge wax guards. Please select option (free for those with valid warranty) Specifications If you are a patient of The Hearing Care Centre and have a valid hearing aid warranty, you are entitled to free of charge wax guards. Please call us on 01473 230330 to order these. Share Tweet Push-on wax filter guards against wax intrusion into hearing aid. 8 filters per pack. Cerustop Wax Guards (Please select) Cerustop wax guards Cerustop wax guards (free for those with valid warranty) Total £5.59 Qty