TO BARK, or not to bark? That is the question posed by the latest Expert Verdict catalogue, which offers two contradictory products. The first is a device that sends an ultrasonic signal as a deterrent to barking dogs. “Bark Free works both indoors and out in a 25′ range, so you can use it to stop your own or your neighbour’s dog barking,” the catalogue tells us.
The second is a radar-operated barking machine. “Dogs are one of the most effective deterrents, and the Electronic Watchdog sounds just like the real thing, alarming intruders 24 hours a day.”
This, as…



