worked great ... just like you said
used this product for my bathtub that was extremely slow to drain.  Moved to this apt. about three months ago... had tried several products prior to this with minimal results.  Was skeptical but first time I used this product the tub took about 30 minutes to drain.  A few days later I used the product again and the tub drained so fast I was astonished.
Rating: 5 stars