Yeah of course, this is Africa after all!
In addition to bars the following are also standard equipment:
1. electrified fencing
2. 8ft walls with spikes
3. alarm system linked to security response
4. automated gates with intercom system
5. panic buttons in every room
6. a good check around in the drive and surrounds before you get out the car (especially when its dark)
7. you get out first, open the front door, give the all clear and then the family get out the car ... (especially when it's dark)
8. some houses have security video cameras linked to security as well.
Those than can afford it have private guards at the front gate too!
Crazy but true!