Bah, I'd just flush it down the toilet and replace it with sugar again hoping whoever put the cocaine there in the first place comes around looking for it again--and major lulz ensue when they discover it's sugar.
Kind of like that dude at the apartment years ago searching a modest size 1 shelf bookcase for 3 hours for his crack he left that obviously wasn't there. I know it doesn't sound funny when I tell it, but if you were there to watch I *swear* you'd be laughing. Priceless entertainment.
Being in Lloyd's situation at the truck stop but instead of Sea-Bass showing up, it's some grubby boomer from L4D.