As we all know rodents are very effective at getting into even the smallest of spaces and its usually when your rumaging around through that pile of old boxes that you find them.
So how do...
When stacking your boxes away for storage consider the following,
Items that you may need again in the short term should be packed last, as they will end up on the top of the pile and be easiest to access.
Heavier items should be packed first so the be at the bottom of a stack. If a box is only half full but is heavy, consider leaving it half full. this will help when handling the box later.
By sorting things into catergories they will be easier to find later. Also remember to label everything.