1. Using aversive tools to correct behaviour Aversive tools include: Shock collars Choke collars Prong collars Ultrasonic devices Compressed air Shaker cans Anything designed to scare or harm your dog. These tools are marketed as way to ‘quickly solve’ behaviour problems, so it’s completely understandable why owners buy them, however the physical and emotional damage that can be done with these tools is extensive. They create anxious dogs who become cautious and wary of every