In the past when my kids had blowout stains that would not budge the outfit normally hit the nearest trash can. Not anymore! I found the best stain remover ever and it's free. I use sunshine to get stubborn stains out. Yes, you heard me correctly...sunshine.
After a blowout I spray the clothing with baby stain remover and wash. If the stain does not come out I proceed to treat with sunshine. I spray the stain with stain remover and set the item of clothing in the sun for 5-10 minutes.
This works for not just poop stains. It works for EVERYTHING. I love to use sunshine on my cloth diapers too. It's magic...give it a try!