The constant frequency Ancol dog whistle is a must-have tool for any dog trainer. This whistle has the same frequency regardless of how hard it is blown.
There are several reasons why whistles are wonderful training tools for dogs. Firstly, whistles can be heard more clearly than the human voice, particularly on windy days. Also, unlike the human voice, the whistle will not convey panic, frustration or weariness. Therefore a whistle sends an unambiguous signal to your dog, so your dog will not struggle to understand.
The Ancol Variable Dog Whistle is also available.