Gira, if your fridge is good enough quality, they WON'T get in there. they'd sooner freeze to death. not to mention modern, high quality fridges have grates with very narrow holes in them, to prevent this sort of thing. suggest buying a Bosch to your parents. that company makes some really good machinery...
oh and rt, a pity about the bees, and the car. i hope you at least made use of the honey

[we found a hive in a large boat my dad salvaged. when we had to move it we knocked the bees out with smoke, took the honey, then moved it. angry bees kinda go : \ when there's nothing left of their hive, or so i've heard. they rebuild.
how old a car was this Saab, roughly?