That's what you use to discourage MOMMA BEAR......!!!!
There was no time for that: The bear already had hold of one of the small dogs (”Alexandria”, time = 00:54). Plus, I’m not sure the girl wielding a shovel could knock the bear off the wall. It might just enrage the bear.
A 5 round 12 ga. pump shotgun with some of these rounds would be a good bet:
https://www.youtube.com/watch?v=bwKHXtH0U90
Lacking that, or similar,), it was “Fortune favors the bold”. (And quick.) At least this time.