Ya, cops don't waste time looking at cameras or attempting to find thieves.
An extremely loud alarm that makes your ears bleed and your brain stop working will deter most thieves. \
I installed two 110 db alarms inside the garage - one right by the door. Your brain melts when they go off and start echoing around inside the garage.
Two more alarms outside on the cameras.
Ya... horses gone, barn door now closed.