I tried the Bar right away on some Cotton undergarments. The Bar felt sticky (because of fat in the soap perhaps) while using but I can't tell how please I was with the result. It didn't damage my Undergarment but took away all the sweat stains and now my undergarments are clean and they stay that way because I use it regularly.
I even went to the store and bought two more bars so that I won't out of it in a long time.
Next I used it on my Kitchen Towel. It had so many stains and they were not coming off at all but this Bar helped me solve that problem. I would recommend this Bar to any one. I shared my Coupons with a co-worker and a family member that would definitely use it.
The Co-worker is a custodian at my work place and she is responsible for washing all the dish rags and other rags used in the building. She told me that she is very pleased with the results and would love to buy it for her home too.
Hooray for Fels -Naptha Stain Remover laundry bar.