I did have to keep doing multiple times in a span of 5 to 10 minutes I added a teaspoon of baby oil to a cup of lukewarm water. After about 5 to 7 tries in one session the blockage was dislodged. I added medium pressure not too strong and not too slow. Enough to feel a medium pressure in the ear to dislodge the blockage. The first 2 to 3 tries were very gentle and slow more to soften the inside debris. Then the last to 2 to 3 were more medium pressure and then if came out easily and quickly. I highly recommend this product for anyone who wants a safe convenient way of clearing out blocked ears.