Well, California used to have hunting of such lions but the environmentalist threw a hissy fit so lion hunting was banned in California. Now they have a too many lions problem.
It's a damn shame. Many trail heads in California have signs warning hikers of the presence of Mountain Lions.
Houses should have area alert horns like the lightening warning horns that clear golf courses until a permanent solution can be decided.or put them on telephone poles with a 911 activation phone number.
Seeing the way the human population has increased in California over the past few decades, I'd say California has more of a "too many people problem".