On my irons I have always used, Iron Off. Available at Wal-Mart. Works great but messy and very important to get it out of those steam holes before ironing your fabric! Now I love, love Iron Clean sheets.
I have used a crafting sealing iron. Which I liked better than the Clover iron that didn't seem to get hot enough for me. At IQF in Houston my daughter in law bought me a Kandi's Handi Iron.
http://www.kandicorp.com/Handi-Iron.asp Love it. I was interested in the iron when I saw the demo of laying a Goddess Sheet over crystals and using the iron to glue them down. Sooooo much better than the tool that is a pain to use and doesn't always get the job done. One other thing. I put the iron in my carry on bag and it went through security. Got to love that!