package says it can caulk 2 bathtubs- I ran out after doing one tub and barely beginning the shower- this SUCKS when you have only one bathroom & it's a 72 hour cure time... Waiting for more to arrive & I will be "bird bathing" in my sink for an entire week :p GET EXTRA! That being said, was extremely easy to use & easy clean up but I would wear a respirator for organic vapors- the fumes are intense!