If you have a baby, you know that stains are hard to get out.  I use Shout Stain remover on all of my baby's stains, from baby food to poo, it gets everything out the first time.  I spray the stain and just toss the clothes in the dirty laundry.  When I was the baby's laundry, all the stains come out.

When you are ready to resell or give away those clothes they will be stain free.