Dog Whistle to Stop Barking Neighbors Dog Adjustable Ultrasonic Silent Dog Whistle, Professional Recall Dog Training Whistleswith Lanyard ，2 Pack Dog Whistle. Doggy Collar's thickness is 4mm

Collar's thickness is 4mm

and delivers lasting relief so your pup stays comfortable and active

ensuring a snug yet comfy fit without restricting movement

[Supports Mental Stimulation and Anxiety Relief] This interactive puzzle toy not only encourages mental stimulation but also helps alleviate anxiety by rewarding your dog with treats during play

The breathable mesh windows not only ensure good ventilation but also allow your pet to have a clear view outside

Dog Whistle to Stop Barking Neighbors Dog Adjustable Ultrasonic Silent Dog Whistle, Professional Recall Dog Training Whistleswith Lanyard ，2 Pack Dog Whistle. Doggy Collar's thickness is 4mmAbout this item When your dog or neighbor's dog keeps barking, gently blow the dog whistle, the ultrasonic frequency emitted by the dog whistle can easily attract the dog's attention and stop barking. Different dogs respond to different frequencies. Our dog training whistle has a nut and screw that would adjust the frequency when turned. Notice your dog's rea The dog whistle is made of 304 stainless steel, which is safe and reliable. The ultrasonic