As has been widely reported recently, an unlikely crime wave has rapidly spread throughout the United States and has taken local law-enforcement officials by surprise. The theft of Tide liquid laundry detergent is pandemic throughout cities in the United States. One individual alone stole $25,000 worth of Tide detergent during a 15-month crime spree, and large retailers are taking special security measures to protect their inventories of Tide. For example, CVS is locking down Tide alongside commonly stolen items like flu medications. Liquid Tide retails for $10–$20 per bottle and sells on the black market for $5–$10. Individual bottles of Tide bear no serial numbers, making them impossible to track. So some enterprising thieves operate as arbitrageurs buying at the black-market price and reselling to the stores, presumably at the wholesale price. Even more puzzling is the fact that no other brand of detergent has been targeted.

What gives here? This is just another confirmation of Menger’s insight that the market responds to the absence of sound money by monetizing highly salable commodities. It is clear that Tide has emerged as a subsidiary local currency for black-market, especially drug, transactions — but for legal transactions in low-income areas as well. Indeed police report that Tide is being exchanged for heroin and methamphetamine and that drug dealers possess inventories of the commodity that they are also willing to sell. But why is laundry detergent being employed as money, and why Tide in particular?