Our dogs live in the garden and used to bark loudly at night when people, cats, other dogs, or when they heard noises, etc. With the collar, they have calmed down a lot, immediately. As for the smell mentioned in other comments, it smells like insect repellent. Okay, it doesn't smell perfect, but it doesn't seem to bother our dogs at all. In contrast to the ultrasonic collar that makes them stop barking, disturbing them.

Apart from having a very strong smell that fills the whole house, its use will probably only work with placebo. We didn't see any difference even after using it for several days. I definitely do not recommend it, it's a waste of money and the smell might even stress the dog more.

It smells so awful and so strongly that we can't stand it, especially since it fills the whole house, let alone the dog!