i dont know if id trust any form of powder found on the ground. although, two friends happened to both find coke on the street last year, on the same day haha. neither picked it up though. well im at least sure one didn't.
I am notorious for dropping nugs. My sister, the babysitter and the bestie are always tell me. but when youre playing with alot of weedies, i tend not to nice a nug or two. now i check for dropped nugs when i remember. call it my crackhead look. lol but only for the good.
Only users lose drugs. I've found this to be true many times. I was smoking with a buddy in a hotel room and somehow he dropped his stash in the garbage can and couldn't find it, but luckily I found it for him!