NEW Dry Caddy by Dry and Store. This is a convenient drying tub to capture the moisture from your hearing aids. Remove the tab on the dry-brick, place it inside the small white tub, then place your hearing aids and close the tub. Convenient to take with you when traveling. The set includes five dry-bricks for you to replace every two months. This Dry Caddy is a great way to keep your hearing aids from accumulating moisture and can help contribute to a longer lifespan of your hearing aids.