Think we had a thead about this a few months ago too. I had 2 crack heads throw one of my paving slabs through my kitchen woindow the make themselves at home down stairs as my family slep upstairs.
Lucky for them i wasnt home... After swearing at my family to go back to bed (as if they would) they left with my mums handbag assuming my bro's brand new beemer keys were in there. The wallet and all her cards were recovered in our front garden. The two gentlemen were later chased through leeds with a slot machine sticking out of the back of another bmw. And suprise suprise they got away

The advice we were given was to just keep everything out of sight... If it appears difficult, they will just go elsewhere (hopefully).