or so in a microwave oven. >> good amount of time leave in there. >> what happens to leave it in there? >> no longer than ten minutes in there at all. >> he teaches them how to brush the bills clean. rusty is showing the undercover officers how to clean the bills. actually taking the ink right off. he finishes washing the bill in a bowl of water and sprays it with a household cleaner. >> what does that do? >> just cleaning the crap off of it. >> okay. >> this is giving new meaning to the phrase laundering money. then he uses a hair drier to finish the drying process. when he's done what used to be a $5 bill is virtually blank. except for the water mark of abraham lincoln. to make the fake hundred he'll use an inkjet printer. >> so inkjet printer?