Waffletechnology Bill Acceptor Cleaning Cards White w/Miracle Magic (15 cards) Waffletechnology (patented in US, Canada and Australia) cleaning cards dramatically outperform flat cleaning cards. Our unique cleaning card design allows anyone to easily and safely maintain devices without opening the equipment or damaging critical sen Money is exceptionally dirty and can cause device misreads, bill slippage, loss of revenue, operational failure and extreme customer frustration at self check out if not cleaned properly. Clean your Bill Acceptor each time you empty machine or at least twice per month. Money is exceptionally dirty and can cause device misreads, bill slippage, loss of revenue, operational failure and extreme customer frustration at self check out if not cleaned properly. Clean when expereincing bill rejection, down time or misreads This card can be used on change machines, pay at the pumps, self serve kiosks, slot machines and vending machines