To USE: Insert the speculum tip into the ear opening and squeeze the bulb to inject a stream of air into the ear canal. If the air is not flowing freely into the ear canal, pull the tip back just far enough to allow the air to flow. Each full squeeze of the bulb changes the air in the canal approximately 11 times. Air will flush the canal and allow the drying process to begin. You should feel the drying process occur as you pump in air. Your ear canal will feel cool as the moisture evaporates. The temperature of the injected air will feel warm throughout the drying process; when no further temperature changes are felt, the drying process is complete. If irritation occurs, discontinue use and consult a doctor. Free Shipping in US.