what technique is best, and what bits?
you had a choice. you chose to use the extinguishers that belonged to the building. Pay the landlord before he sues you or keeps your deposit or kicks you out for starting a fire at his building. If your car caught his building on fire, your would really be in trouble dont fight it, just cough up the money for the recharges and glass. yes it sucks, but it is cheaper in the long run and way less agrivating then fighting with him over this.
Alarm systems suck. Nobody pays attention to them. When a car alarm is going off in a parking lot, do you run to it thinking somebody is getting their car broken in to or do you just ignore and think to yourself God that is annoying. Your best bet is to get a tracking device like Lo Jack If a vehicle moves more than about 10 feet without you around it, they call you and if you tell them you haven't touched it then they alert the police. Lo jack sends out a signal telling the police exactly where the car is. I think it costs about $600 to install, but it's a one time fee. You don't pay anything monthly.
