Hi L., I do have a solution to your armpit stains. I use Shaklee's non-toxic laundry detergent - it is a great detergent and one of the best pre-spotters I have ever used. I, too, have a real issue with underarm stains and, like you, changed deodorants so many times trying to correct the problem. Actually, I now use Shaklee's roll-on deodorant which has cut down the problem. Anyway, whenever I put a turtleneck, t-shirt or blouse in the wash, I pre-spot it under the arms with the Shaklee detergent - it really has made a difference. I also use their Nature Bright, which is a laundry booster/stain fighter. It works to whiten whites and brighten colors. It is a granular powder that you mix with warm water and add right on top of the detergent in the automatic dispenser in your washing machine. Every couple of months, I mix up some Nature Bright with a little detergent in hot water in my laundry sink and soak my whites for a few hours, then wring them out and throw them in the wash. Nature Bright often takes out old stains also. I love all the Shaklee products as they are non-toxic or all-natural and have become a distributor (makes sense since I am always telling people about them - might as well earn some money for my effort) Just go to my web site www.emilytaft.com and click on "Home Care" on the menu to your left. If you have any questions at all, please feel free to contact me any time at ###-###-#### or ____@____.com Hope this helps. E. Taft