Hi I am Mark Williams and on behalf of Expert Village and the producer of this series. You can visit our website at www.williamspictures.net. We are going to use our gloves. In case you are wondering you can get these swabs through us. I have not seen them in any stores you can email me and email@example.com and I can order them and send them to you. They are only a couple of bucks and I believe they work the greatest. Okay we are just going to go around the chrome. Again don't forget to wash off the swab with cold water. Give it good shake out and go back around and dilute out the chemical that was just put on there. One thing to keep in mind soap scum is a little bit more tricky to get of because it clings a lot more. It has a little bit more viscosty to it. Soap scum is not really a agent that was really design to be chemically reacting with any thing. You are going to want to make sure that you pay a little bit extra attention to the soap scum. Again you can just go back over this with a towel, drying it off, or a rag or something. And that's how you clean off & remove the build-up on a bathtub.