This works well vvv.
When I was a young fella I used to work for Mayflower as a driver/loader. We quite often picked up whole households and put them in storage sometimes for a couple years at a time.
We used charcoal (the basic charcoal NOT the self lighting stuff) we would purchase ladies nylons and cut the legs off and put charcoal in them and tie the end up so it stays. We would put a small amount in refrigerators and then a leg in the storage box itself before closing it up and stacking them in the warehouse.
Charcoal works surprisingly well, I have opened fridge doors after 2 or 3 years and there was never any mold and it smelled fresh. Customers would often comment when we brought their fridge in the house, "I bet it's going to stink inside". Nope, never happened, it works well.
