I received a sample of Tide stain release in wash booster thought I would try it on my childs fresh blood stained piece of clothing. I soaked the clothing item in cold water first then I put it in the laundry (added the soap and tide stain release pack first.) After the clothes finished washing Iooked at the article of clothing with the blood stain on it , it was still there. I had to retreat it with shout, a little bit of laundry soap let it sit for about 6 hous then re washed it. Only then did the stain come out. So I give Tide stain release in wash booster pack BIG thumbs down.