wet wipes

Q: Please advise with regards to wiping a baby's bottom while the baby is still in diapers. Is it sufficient to use the baby wet wipes, as it removes all visible impurities, or do we need to wash as well?

Q: Does washing clothes that have stool or urine or blood in the automatic washing machine considered to be pure after the washing process is finished? Another thing, is using wet wipes to remove impurities from clothes considered to be pure?