In a quest to see what works best on the STI seats I have tried Blue Coral and Tuff Stuff. Both work great but it still don't bring up the mashed in dirt that's in the perforation of the Suede or whatever the blue material is. So today I see DuPont Teflon Carpet/Upholstery cleaner, it's almost $5 a spray bottle and well it's made by DuPont so you cant go wrong! I came home vacuumed the seats and went at it. The directions say to soak liberally and by god I did, and since this is a pump spray with liquid instead of a spray foam the soapy liquid gets down into the perforation holes instead of the other cleaners that are a spray foam that just sits on top of the fabric and over sprays everywhere when you spray it. I let the cleaner sit for about 10 mins, more than the 2-3 that's recommended. Next I took a white microfiber towel (so I can see the dirt on the towel) and rubbed from front to back going only in one direction. The more I wiped the blacker the white towel got! After the initial wiping I took a second clean microfiber towel and blotted up anything soap that's left. Looking at the seats now I cannot believe how clean they are, they look brand new! The cleaner lifted the dirt that was embedded into the perforations and well I am just amazed. Also with the Teflon it is supposed to prevent stains and keep cleaning easier. I would recommend this to anyone with STI seats that need some TLC (tender loving cleaning). Oh and it smells good too!