No offence, its my own opinions, dogs you don't need to worry about how much to pay them per mths or their annual leave and benefits as compare to a human security guard. You just have to feed them once a day and shower them with love 5 to 10 mins everyday. They will then work for you 24 hrs and they have a much higher alertness than any human.
Bathe them 5 to 10 minutes everyday ? are they 4 legged fish or what ?
To own, maintain, up keep them as a 'worker' u just need to send back for training/retrain/refinement.....
not a low cost 'worker' as u though.....