Yes, I'd like to see a 'shock' collar around the necks of a few humans who let their dogs roam the streets.
Many years ago, we lived next door to a big dog that barked for hours and hours every day (and night) when their owners were not there. One day, we recorded it on the hour every hour and presented the evidence to them, not that they really cared, didn't affect them.
Ultimately, neighbours approached the local Council and the offending owners were made to put a stop to it. That was one lemon collar solution that worked well, so a most happy ending.
Know how you feel about that Jessicadazzler, I walked into two Rottweilers just standing there on a street corner a few years ago. They didn't attack or come towards me, but oh how big they were, roaming free together. I was on my own and it was so hard to not turn on my heel and run but that would make me prey for what might be predators.
Somehow, I just quietly and calmly turned and walked back towards the house (but ran up the driveway because the door was in sight) ... I'm sure I sweated blood that day ... 
... since then, I never walk on my own.
I do like little dogs though, miniature Snauzers, Maltese terriers etc ... but having said that, I do like Labradors and Basenjis.
