Dude, Google "pre-soaped sponges" or "soap-infused sponges" - there are plenty to buy. The Chinese factories that Mosky and Metter bought the sponges from never quit producing. Spongetech never had anything exclusive. These sponges are sold by dozens of vendors online and in auto parts stores.
SPNG never had anything special. Just a Chinese sponge as a prop.
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