I feel like this may be counterintuitive. I would suspect that buying edibles would be the least risky, since they would have to get a search warrant to open the package, and then test them to see if they contain marijuana. LSD is probably harder to catch since it's just small bits of paper, but people still get caught for it. I'm not sure if anyone's ever been caught for edibles.
Wait what?
But they would have to get a search warrant to open mail if they suspected LSD for whatever reason, and then they would test the tabs to see if it is LSD. I don't see how this makes edibles more stealthy. Edibles consume more space and do produce smell compared to LSD, a tiny ass piece of paper.