There used to be a product called Didi 7 that removed stains from clothing...Does it still exist?

Well there are other cheap solutions, here are a couple thoughts:

(just make sure to test the solution or cream first on an unnoticeable edge to make sure it doesn't react with your clothes...oft referred to as colorfastness.)

In a glass or plastic bowl mix 1 Part Vinegar either white or apple cider to 2 parts cool or lukewarm water. Blot the solution onto the stain until saturated through. Place a couple of clean white rags or paper towels doubled over the stain and place direct pressure onto the rags for several minutes (this can be done using a clean foot, palms of your hands or using any heavy object that won't transfer color). Replace with clean rags and repeat applying pressure until surface is no longer it will still be slightly damp. If the stain is still evident repeat this process until gone.

Use a can of white shaving cream. Spray a slightly thick coating of shaving cream over the entire surface of the stain. Using a folded paper towel apply just a slight amount of pressure just so the foam will go just slightly below the surface but you do NOT want to press it deep into the fabric (you should not end up with a thin layer of cream after doing this it should still be thick, that is how lightly you should be pressing). Then allow the solution to rest there for 7 to 10 minutes, undisturbed. Then using a clean white rag or short bristled scrub brush thoroughly scrub the area using straight or circular scrub strokes starting from the outside of the stain and ending in the center, do this all the way around it. To remove any excess dampness and soil blot up as usual with a dry clean cloth or paper-towels.

Hope these help

Hi There! I don't know about Didi 7, but I have the one that I use is called Prima-Tint by Tweezerman. It is designed to remove hair tint from clothing, but I have used it for all sorts of stains and have 100% success with it! If you go to Tweezerman.com, it is available. It is worth the price!! Good Luck! :)