Agree that an audiologist check is the way to go, for an initial check of each ear. The ultrasonic treatment would be appropriate if at least one ear was bunged up, which is the suspicion with one of mine. Certainly, the ultrasonic treatment options seem to have come a long way over the last decade or two - using ultrasonic wand with spoon to extract the gunk out (alert to those of sensitive disposition..) Over here the NHS used to cover that sort of treatment but these days it tends to be a private option. Fortunately there seem to be lots of specialist clinics offering the service.