There is Scram for Dogs it is a mix you sprinkle on your yard and makes it unappealing to the dogs. The listed ingredients won't hurt them or people. It is sold through Walmart.

The only way I can see that as appropriate is if you need a psyche evaluation to qualify for the surgery. They would need to state that though. So it's an inappropriate question.

This is crazy y'all. People shouldn't be scared of gun violence in a hospital or anywhere, really.