My daughter's bathroom tub has tile on the wall, and there is a little discoloration so my wife starts telling me I need to caulk it. (Ooops, 1st things 1st. I am not some big time handy man. Not stupid, just have never done home repirs.) Anyway, shes yellin at me to caulk around the tub because " if we let it keep leaking (?), it will rot. So I finally go get all the stuff, caulk, caulk gun, caulk removal tool and caulk soother too. I get in and start trying to remove the old discolored caulk and realize it's not caulk, it's grout. So I just put caulk on top of the grout. It didn't go so smoothly. Actually it was nasty looking. So I cleaned it all up and now I don't know what to do. I have searched the web site and can't figure anything out. I can't believe I really need to dog out the grout, cause it is only three years old. She thinks since it is porus, water is getting through the grout and thats why we need caulk. Anyway, I think you can figure out my dilema. Any suggestions?