I was also worried about mice/bugs in my bins I had to store in the shed. I shrink wrap the lids on! It keeps everything tightly closed. even the huge rolling bin I store the Christmas tree in. I found the latchable lids popped off pretty easily and usually just about the time I had the bin over my head to slide it on the shelf! I get 5-6 inch wide shrink wrap at one of the office supply places. Love it