Soaking your used cloth pads as soon as you can is desirable but not essential. Soak only in cold water and rinse until the water runs clean. Do not use warm water at this point. Use natural laundry soap to get rid of any staining before the next step. You can completely skip these first steps if you plan to use sodium percarbonate in your laundry washing.
Wash your cloth pads with your laundry in the washing machine. You can use hot cycle (up to 60degrees) and you can use any detergent. If you skipped the previous step then just add some sodium percarbonate to your washing cycle and wash on hot (60degrees).
Do not tumble dry your Lilahpads as they would loose their absorbent super power. Try to line dry your Lilahpads in a sunny spot as much as you can. This will ensure your pads are sparkling clean.