Keeping your car seats (child) clean protects your investment and improves both appearance and performance. Here's the right way.
Check the car seat manual for cover removal instructions. Most fabric covers unclip or unthread from the harness.
Vacuum crumbs, dirt, and debris from the seat base, crevices, and buckle mechanism.
Wash the fabric cover by hand in warm water with a small amount of Power Wash detergent. Some covers are machine washable -- check the tag.
Wipe the harness straps with a damp cloth only (no soap -- it degrades the webbing). Clean the buckle with warm water.