true this bk, but truth be known, you and i both know it does NOT take a cleanroom to make good quality gear either. not saying someone who mass produces it and sells it shouldn't take some precautions, but i have produced my own gear in my kitchen on the kitchen table for years, and also made it for a few close friends, none of us have ever had any problems at all......the process is quite simple and if you just have some basic sanitary skills there is really no way to screw it up