Complete and utter bullshit. I figured this would be an easy and quick way to caulk my bathtub. I ended up spending more time and money than if I had just bought a $5 tube of caulk and used a caulking gun. Save yourself the agony. It's a cheap plastic strip with some kind of slightly sticky substance. It doesn't hold well and the adhesive doesn't reach the edge of the strip meaning there is a small gap at the top for water to get in through making the whole thing completely unusable.