I was looking for a solution to yellowed sheets when I saw this on Amazon. There was another reviewer who said she had trouble using this product with a front loader, so that made me a little nervous, but I decided that since bleach wasn't doing it for me, I had nothing to lose. And it works just fine. One thing I do - I have an LG front loader washer - is I use the bleach receptacle and add a little water. I've been doing experiments with just how much bluing to use and how much water. So far I've added a few drops of bluing and 1 tablespoon of bluing, filling the rest with water. A few drops was too little, but I did see a difference in the whiteness of my sheets. 1 tablespoon was a lot better. I figure with continued washings and more bluing, I will say goodbye to yellowed sheets forever. I will definitely be purchasing this product again. Who knew?! I don't think you can soak/wash 1 load of yellowed whites with bluing and get completely white sheets, but that's ok with me. My sheets did not become yellow all at once, so I figure it will take a few washes to get the yellow out.