Buy a giant ziplock bag, or reuse an old one you have and just keep refilling it as you need it. Think of all the packaging going in OUR lansdfills. You can keep the bail anywhere even off site...

Just curiouse does you name indicate your city? I can't see your provincial flag but it looks like mb. If I'm correct maybe I can "drop" a bag of mix out of the car every few months and you can "find" it, lol.