And rule number one on how to think about bio hazard is that when something is contaminated everything it touches is contaminated, so if you bag your machine. The ink caps are contaminated, and spray is flying off the needle tip, up the tube, out the top of the tube tip causing every tool used on that tattoo dirty. My boss has a great study showing how biohazard from a procedure can travel to every corner of a facility in such a short time it's just mind blowing. I'll try to find it and post it.