Mice around my house today, How to kill mice

Today was one of those days where I had to pinch myself to see if I was dreaming. No not in a good way, but in that way that you know life is about to get a whole lot harder because your wife has just seen a few mice around the house. Not really a problem you say "my wife could cope with a few mice" well you are not a pest controller are you? Thats right, the field that I have been in for 29 years now and I allow some filthy little mice to breed in our yard. The sky might as well have fallen in.
After I had taken quite a few deep breaths, bitten my tongue and adopted a sorry dear it will never happen again type of pose, I headed to the shed to start a war.
In Sydney the temperatures have recently started to dip below 10 degrees celcius over night. This means that many of the creatures that tend to live and feed outside are now venturing indoors in search of a warm place to live. We live on acreage and over the past few months the grass has got away from me, I usually keep it nice and short but with lots of rain around, I had not had a chance to mow the paddocks in months. Yes I know, another failing pointed out to me on a regular basis. I tried to make good last week, I contracted a person with a tractor and slasher to cut the grass. No I hadn't thought about the hundreds of mice that had made their homes in the long grass happily feasting upon the plentiful grass seed.
What have I done? Removed their homes and food source in one go! Before the slashing contractor had even left the first mice were scoping out my house as a new home. War it is, luckily I am well armed to kill mice. I have a plentiful supply of bait and lockable stations to ensure our dog cannot access the bait at all. I have strategically located stations around the perimeter of my house and placed baits in the roof void and sub floor areas. Now all I need is a pair of earplugs and a couple of days for the bait to take effect. I will report on the outcome soon.