I haven't used it, because I would see it as an emergency system only. And the emergency would have been created by my being disorganized or inattentive to begin with.
If you do your homework and don't overstock, if you don't overfeed, and if you do regular water changes of a decent volume (I do at least 30% every week), such products aren't needed. In rare cases, people get polluted water from the tap, with ammonia included. That makes fishkeeping really difficult and expensive.
I hope you don't have that issue.
But if you don't, there's nothing that product or its competitors will do that a water change won't. Chemical fixes are short term, and water changes are a much better option.
Cheaper too, and better for the fish.