I agree that TIDE is the best detergent out there and has been for years. Sure, Ive tried others thinking that maybe there is better out there, but it was always a disappointment. I headed straight back to Tide. It takes out grass stains, grease marks....heck, pretty well anything I have thrown at it. And with all the different scents and an unscented too, you can be sure to find a version to suit your senses!
I have two large breed dogs and they are always getting into mud and dirt - Tide takes it all out. The same goes with grass and dirt from gardening and grease stains and that pesky tomato stain! Between liquid and powder, you can anything out with Tide. I have used both powder and liquid with the same great results.
You may pay a wee bit more for Tide, but isnt it worth it to get it clean the first time?