Chicken Feed, what do you keep yours in ?

[IcantbelieveImForty]

Have bought 2 x 20kg of organic chicken feed (an offer on) & now not sure what to store it in to keep it fresh. Am looking for something airtight because I think it will be a while before my chooks eat their way through it !

Mine lives in a galvanised bin, but isn't air tight.

What about something like this I use it for my dog food, holds a 20kg bag of kibble and is really unobtrusive.

thanks - I've bought 2 of them & they are great !