Could all you dog lovers tell me what you think about this gadget?

The link doesn’t work for me.

Is it this? https://www.amazon.com/s?k=Pet+gentle&ref=nb_sb_noss_2

I don’t have a dog.
I do love dogs.

This: “It doesn’t hurt them at all but it will get them to stop their behavior.”, I would like to see explained before I’d purchase it, because my initial reaction is BS.
Now I’m not an animal behavior or – psychology expert, but it’s my gut feeling.

It either works or it doesn’t according to the reviews. A couple reviews said it works great, but a few said it was garbage.
Edited to add that I’m referring to @canidmajors link.

Here’s a thing about ultra sonic trainers. https://www.dogster.com/lifestyle/ultrasound-dog-deterrents-and-repellers-training

I’m not into anything that modifies behavior by causing my animals discomfort, so I wouldn’t use it personally.

If it’s unpleasant enough to “work” after just a few tries, it’s obviously painful. So, not safe. Or as safe as painful noise is to your ears.

It’s been proven over and over again: positive reinforcement is the fastest and most reliable training method.

Not to mention the adverse effects it might have on other critters in the immediate vicinity.

@canidmajor Good point. I wonder if hearing aids or other medical apparatus causes some humans to hear some frequencies? Hmm..

Without going to the time and trouble of downloading the link, this whistle is probably similar to the electronic device I sometimes carry called a “Dog Dazzer.” Whne activated, it emits an ultra high frequency sound that only dogs can hear, and I assume it hurts their ears without causing any damage.

It might aid you in your decision to look up some reports of people that suffered through the sonic devices used for crowd control. I’ve heard of migraines and ringing ears lasting a whole week, and scarily high pressure on the eardrums. The expressions of those poor dogs subjected to that type of training clearly convey intense fear and anguish. Plus, unlike a person, a dog can’t move away from the device in most cases.

It might also interest you that dogs usually bark from stress. Obviously, pain will cause more of that. As with people, it’s possible to increase pressure to a level that causes an individual to shut down. We see that in victims of violent crime, for example, or severely abused children.

So you might end up having a dog who shuts up because he’s shut down. But I really hope you don’t want that.

There are no bad dogs, only poorly trained dogs.

If you miss the 3–6 month window to properly raise a dog when they are a puppy (which is a full time job), you might wind up having to use negative reinforcement of one kind or another after they have been permitted to adopt poor behaviors.

So it simply becomes a matter of which negative reinforcement. I don’t like the ones that are painful either because, although I can’t prove it, it seems seems logical to me that it might simply wind up trading one poor behavior for another.

I love dogs, but if I can help it, I won’t put up with a vicious dog. I’ve had two different dogs-huge powerful dogs- threaten me, and both times I had to get law enforcement involved to document the problem, but that didn’t make me feel safer because the owners didn’t change THEIR behavior!

If one of these devices would help me stay safe, I’m all for it.