Canicalm Spray Canicalm Dog Bark Limit Collar Special Offer get 2 free Universal Gas Refills with every Collar ordered nbsp The canicalm bark limiter controls Dog Barking Canicalm collar is universally accepted as the smallest anti-bark spray collar available today The collar helps to prevent barking How it works The Canicalm collar contains an microphone designed to detect the dog 39s bark As soon as your dog barks a spray which is painless & harmless is triggered in front of the dogs nose The surprise element is enough to stop the dog when he barks unnecessarily Contents a spray collar & strap a 75 ml spray refill instructions for use Features Painless Internal Long life battery that under normal use will last approx 4 years works even when you are absent On Off switch Weight only 42g the lightest spray collar on the market Translucent casing which means that you can see the gas level