Originally Posted by Tim M
If they were mine, I'd rub them with a cloth and some washing up liquid. Followed by a squirt of heavily diluted TFR and water. I occasionally put my water-proofs in the washing machine inside a pillow case which brings them up like new, and they're still waterproof after several years.
Yep, a drop of TFR sorts most stains.
I use it on our ski gear also. Work the diluted TFR into the stained area and then bung it in the w/ machine. Then back in for another wash using Nikwax wash-in re-proofer. It puts the proofing back that the TFR removes. I buy the re-proofer on Ebay.