My lab (nearly 18 months) has returned to the bad old days of barrelling off after other dogs and yesterday jumping up at people on our walk. I'm beyond miffed as I had just got to the point where I was enjoying our walks. I use a whistle to recall her from playing and she comes no problem, I just can't stop her when she is head down on a mission. Is a citronella collar a bad idea? I have only read bad stuff on here a about them but know a couple of people in RL who swear by them.