Oh, it's got a lid.  Think of it as a smaller version of an old-time 
garbage can.  Plastic containers don't work around here.  Before I 
bought the galvanized metal can a friend had given me a plastic bin with 
a snap-on lid to store bird seed in.  In the garage.  A critter chewed 
through the plastic.  Turns out it was a rice rat:
https://en.wikipedia.org/wiki/Marsh_rice_rat
I bought the galvanized can a few years ago.  Even after that and with 
no discernible food source, last year I had a rice rat decide to take up 
residence in the glove compartment in my car.  It gained ingress by 
chewing through the cabin air filter.  I wouldn't have known it was 
there except I kept a couple of re-usable paper grocery store bags in 
the car.  I noticed chewed up paper.  I opened the glove box and it was 
full of shredded paper.  The darn thing had used them to start a nest!
I had a heck of a time getting rid of that darn thing.  Once I did, I 
put moth balls in the glove compartment.  I keep moth balls scattered 
around the outside of the garage and inside.  I'd rather have moths than 
rice rats, although I'd prefer neither one, thank you very much. :)
Jill