First of all, no one is arguing that this isn't a toxic substance. That's why it's used for the purpose it's used for. So that can be dealt with. You can regulate the use of it. That's your job. But the reality is that there is no other alternative there, and the decision was apparently made without any specific scientific evidence to make it. They talk about dog poisonings. I have dog poisonings in my part of the world now, but unless you have some vast, documented evidence that this is happening on a grand scale, that's not a reason to ban this substance.
In terms of police forces, I don't know what their data was, but the ready-to-use products do not work. Even the diluted form of the brand is not working effectively. The only thing that works is long-rifle .22 shells, and people are getting sick of doing that.