Anti-bark collar a success!
My vet recommended that I try Gentle Spray Citronella anti-bark collar, and it is a great success for my dog, Charlie, both inside and out. In fact, the effect is residual... even when he is not wearing the collar his barking is significantly reduced.
ProsI like the immediacy of its effect, and I like that it is a natural remedy.
ConsIt would be nice if the box part was just a bit smaller (my dog is only 8 lbs) but don't know if that's possible because it has to house the spray and mechanism.