My sponges were the standard kitchen type. I have since purchase the dehydrated version at a gourmet shop locally. try some of the online cooking suppliers. If you strike out somebody on the forum could send one off to you. It isn't critical to have sponges, you can use clothing. I wear 'rags' or bandannas. they actually work quite well. Sponges are a nice item and pretty versatile. I was out hiking and one of my companions had a rucksack even more ancient than my Swede surplus. The monster load and leather harness made short work of her shoulders. I retrieved mine, unwrapped the ducktape from my knife sheath and rigged shoulder pads.<br><br>