Answering the phone Bob
Before I go w/ my reco's yes - I am a chemist & do work for P&G in the R&D laundry. Most of my reco's will involve our products - because yes they do work & is what I am most familar with.
Tide w/ Bleack granular - is the best cleaning product out there & safe on colors & gets out most stains. Get the stain wet, sprinkle on the det powder & scrub by closing the fabric on itself or use a soft bristle toothbrush& then do a regualr wash in the hottest water - but need to be careful w/ hot water on colored clothes as it does fade them a little which is why you generally wash them in cold. Also, for grease & grass stains I will also mix the tide w/ bleach powder w/ Dawn dishwashing detergent & use a soft bristle brush.
If you are dealing w/ whites - liquid bleach can be the best. Too much bleach however can cause yellowing so watch the amount added. I would suggest Clorox Bleach or the powder chlorine you put in you pools which is pretty safe on colors - this is what we used on our black & white uniforms for clay & underarm stains but these were also sublimated material.
Be careful about using carpet cleaning solutions because they will break down the fibers in the fabric causing them to eventually to break over time & thus a hole appears out of nowhere - not good
If you can find a chemcial out there called Neodol -its fabulous & very strong. We use this alot to strip fabric so has to be used in low doses.
Hope this helps - heck maybe there should be a little forum on OFC for this kind of stuff.
Let me know if there are any other questions.