I took my two boys at ages 9 & 8 and showed them what a gun (1894C .357 magnum 158 gr. XTP HP) can do to a watermelon.
They got the point.
The youngest likes shooting, the oldest not as much. They’re teenagers now, and gun-smart. The youngest wants to get after some squirrels bad but I just have no place close to home to hunt. I do take him to the range once in a while, though.