When dealing with spills, soak up as much as you can, and as soon as you can, with a cloth or napkin. Then use a few wet wipes to clean the seat as best as you can. When you get home, read the manufacturer's instruction manual or search for it online then follow their cleaning instructions using the right cleaning materials. Some cleaning methods may not work on the fabric of the seat, so it's best to get the correct advice from the manufacturer.