OtoFerm Acoustic Seal Creme

The feedback from the hearing aids is driving me crazy! Lily's hearing aids were buzzing all through church this morning. I kept going to the nursery so we wouldn't distract anyone. We've had these molds for 6 days. Has anyone every heard of OtoFerm Acoustic Seal Creme? I've read that it helps cut down on the feedback. If anyone has used it or heard of it I would love to hear from you. Here are a couple of cute pictures from this morning. Somehow she managed to get her foot stuck in the toy on her bouncy seat. I love her so much!