It’s important to make sure you’re using your martingale correctly once you've got it. If your martingale doesn’t have a buckle, loosen it so it slips comfortably over your dog’s head and ears, then tighten it once in place. The martingale should fit snugly while at rest, and you should be able to fit 2-3 fingers underneath. When the collar is tightened, the two metal pieces (or the buckle and the metal piece) should be 2-3 fingers apart. They should NEVER touch, as this would mean the collar is too loose and could slip over the dog’s head.
Martingales are intended to be used only while walking on leash with an owner. Never leave your dog unsupervised while wearing a martingale collar. The extra loop poses a hazard because it could potentially get caught on something, such as a fence post, which can harm your dog. Always keep a regular collar on hand for everyday wear.
When attaching your dog’s tags, attach them to the side pieces of the smaller loop rather than the leash ring. This is another safety precaution to prevent the collar catching on something and tightening on your dog.