Fels Naptha soap! YESSSSS! I haven't used it for Ferretone (I find that Zout takes it completely out with just one spray) BUT I know how well Fels Naptha works. My son used to play Little League baseball and for some reason, they always bought white baseball pants. Now try to get ground in dirt and grass stains out of the knees of white baseball pants! I discovered that using Fels Naptha on the stains and then washing all the whites in the washer with Cascade powdered dishwasher soap, took all stains out completely. Whites were whiter than with anything else I've used. I think it's because years ago they took phosphates out of laundry detergent due to polutions issues with the environment. Because dishwasher soap is used in such small quantities, they never took the phosphates out. For Ferretone stains, and believe me, I've had my share! ZOUT in a spray bottle from your local grocery store works like a charm. I've never had a stain that I couldn't get out if I spray it right away and wash it. Barb and her 4 whirling dervishes...Cher, Jake, Sam and Tess [Posted in FML issue 5170]