I keep it in my freezer.
Shows like CSI serve to convince the jury that every contact leaves a trace, and that you need DNA for a solid conviction. This is a handy thing; if you clean up after dinner, chances are you won't leave enough for them to turn a unilateral response. All you need is one juror unconvinced and you're home free.
Of course, that assumed you were foolish enough to let it get to trial in the first place. Depending on how you like to work, clean or messy, fast or slow, you should never leave them in situ. Work to secondary crime scenes - This unfortunately increases the likelihood of capture and means you have more work to clean up, but it allows to to work at your leisure. nobody likes eating in a rush.
get her on the table, get out the bolt cutters and get those nipples in the frying pan.
"When a doctor does go wrong he is the first of criminals."