This paste works really well. I had some build up, and occasionally would hit a steam button and the build up would cause a stain on the fabric. It was frustrating too, because I always tried to clean as I go but sometimes the the gunk would happen during a project and I would only notice when it created a stain. I had to do a couple of applications to get it all off, and that’s what is great, it ALL came off! And now, as soon as I see a build up,?I can clean it then and I know that a single application will resolve it!