They're designed to collect the condensation from your fridge making for damp conditions which are ideal to rot your vegtables, in order to make a smelly green mush of even the freshest greens in no time at all.
>> Edited by timmy30 on Wednesday 5th October 11:33
I have two - well they're baskets rather than boxes, so they don't get soggy inside. One of them is used for storing medical supplies for pigeons, in the fridge. The other is not in the fridge. I strap it to the rack on my bike to carry shopping in.