Bark Trainer

Bought it to see if the frequency would be high enough for my deaf dog, it says in the instructions that it’s not, but it works great for my hearing dogs.

Satisfied with the purchased item, no damage upon receipt from delivery, the waiting time was longer than stipulated... Need to test it to see if it works well... Thank you, I recommend the nyvize.

Delivered quickly! Everything works, the dog is really scared.
I recommend it!

Ah, great, I really recommend it! My dog, Na 😱, as soon as he sees it in our hands, he immediately stops, even though he can't really do that. Yes, yes, yes!

Works perfectly two types of sound waves, not audible to humans but perfect for not making dogs bark. Intermittent light plus constant light.

Good product, the detail is that you have to get a little closer to the dog for it to work. Excellent material, the good thing is that it also works for cats, but in reality it does work. I liked it.

Perfect, came well packaged and most importantly, it works! I RECOMMEND

It arrived earlier than expected and I've already tried it; it works well.

The item is simple and is very good quality, so for the price it's great. I've tried it with my cat and it hates it, so I can say that it works perfectly.

Device as described. The material is of good quality. It came with a battery, but I haven't been able to test it yet to see if it works. I will test it and leave an additional comment later.

product as described. rechargeable battery with type c cable included in the package. I still need to test it, I sincerely hope it works.

It arrived on time, very well packaged and in perfect condition. I have tested it and it works perfectly so far.

It arrived in 13 days, works super well. For the price, it's great.

works well on most dogs

I haven't tested it on a dog yet. looks great. works

Package received, useful device, thank you Nyvize.

I haven't tried it yet, but the device looks good and sturdy.

seems to be good.

Works well

It works well.