My neighbour has one of these citronella collars on her dog she saved from a drug den. Pretty old dog but it stopped barking! She now just puts it near where he barks in the house and let it do its thing. The dog is pretty much conditioned now not to bark.
http://www.barkcontrol.com.au/shop/...collars/0103?gclid=CM_BoP3b4s0CFQGbvAodLW8KTQ
