This product is ideal for straight runs. I have leveled both tubs outside and it has remained without problems. And it looks great! However, when I put it on my dresser, it came loose in several places. I've tried several times to make it stay, but it keeps coming loose in a few places. If you have cracks along the wall or tub then this is for you and if anyone has any suggestions on how to get them to stay near the toilet I'd love to hear from you.