SENTRY PET Care Sentry Calming Collar for Cats, Long-Lasting Pheromone Collar Helps Calm Cats for 30 Days, Reduces Stress, Helps Calm Cats from Anxiety, Loud Noises, and Separation, 1 Count

The Sentry Behavior and Calming Collar for Cats contains 0.02% pheromones and was designed to calm cats. The collar fits all sizes and is supposed to be used like a breakaway collar that would release when under stress from the right angle. However, some customers reported that the collar does not act like a breakaway and has the potential to endanger cats. One customer even suggested that the product be zip-tied to an actual breakaway collar. Customers also didn't like that the ingredients can't be disclosed for proprietary reasons and didn't enjoy the collar's smell. However, most customers expressed positive feedback and claimed that the collar calmed their cats, making them more tolerable and reducing instances of anxiety or aggression. While some customers reported that their cat was lethargic for a couple of days, it wasn't a common concern. Customers are cautioned to ensure that the collar was the appropriate fit and not too loose.