Biz is great for all types of stains - soaking clothing in a sink with water and alot of Biz is the first treatment for most stains. Great for stained shoe laces and cuffs. Just soak and then wash as directed in the washer. On white fabrics, clorox bleach pen on a toothbrush is good spot remover.
Oxy Clean is great to make a paste, apply, and let sit. I keep the tiny spray bottles everywhere so I can treat a stain immediately. Also good to add along with your regular detergent occasionally to brighten the entire load.
Goop is a hand cleaner and is good for grease. It goes on without water. Apply liberally and let sit, then put in regular wash cycle. Has been found to remove stains from clothes that were washed and dried with a crayon. Found at Walmart and hardware stores.
Fels-Naptha is an old fashioned bar soap. Just wet bar and rub in. It won't hurt if it dries in, works great on most stains, especially good for ring-around-the-collar and perspiration stains.
Hot Water is great for kool-aid and jello-type stains. Hold fabric taunt and pour from a height. Soak or repeat if necessary. Comes out every time!
Mother's Miracle is a cleaning solution new mothers can't do without! Great for spit-up, urine, blood, etc. Found at Baby Superstore.
Carbona Stain Remover - various solutions for many types of fabric - the rust solution is a very good one. Found at Kroger and many other stores.
Tilex is great for mildew stains on white fabrics. Remember, it is a bleach! Must be used carefully, especially on colored fabrics. On whites, spray on and let sit - just rinse if blue spots occur. On colored fabrics, it's easy to cause bleach spots, but carefully spray on and rinse quickly. Using tilex on colored fabrics is really a last resort.
Rit Dye color remover is another last resort, but can be effective. Follow the directions carefully. On small stained areas, it is easier to use the stove-top method, but for larger loads, use the washer.
Fabric Link Website - http://www.fabriclink.com/Care/Home.cfm
Barefoot Lass's Stain Removal Page - http://members.tripod.com/barefoot_lass/index-2.html