I'll second Greg's camera idea. We had been plagued here for years by a gang who stripped isolated holiday homes of everything bar the paint,[ furniture, fuel oil, tools, fittings, food, garden plants - everything, including the kitchen sink], who then came back for the new insurance-funded replacements as a second or third bite of the cherry. Until, that is, a local Brit got angry when they wrecked his new pool house. He got a Paris security co to fit high resolution cameras linked to the Gerdarmeries and a private security outfit. Bingo, they caught them all on the next outing almost before they got out of the house and they're now banged-up waiting for long sentences. Now, us being a quiet backwater, our police have little to do at the worst of times, so a 'shout' at 2am resulted in literally every Cop within 50 kilometers homing in on the crooks from all points of the compass. Stupidly, they had kept most all of the loot for their own use or stored it in a barn. Now the fun starts, as the Insurance Co may try to return the goods and want their money back!