I actually thought they were great - I mean, I wouldn't trust their product, but all I've experienced multiple times there were people who whisper the name of the drug they're selling in your ear while walking past you in the opposite direction, never had anyone trying to convince me to buy. The only time I've even had to say a word back to them was when a friend and I were curious what the street price was so stopped one who offered and said sorry we're not buying, but would you mind telling us the prices, and he did and then went off cheerfully.