question for those that buy large bags of rat food.

I usually buy small prepackaged or by the lb lab blocks and store them in the freezer to kill/prevent any potential moth problems as I've had them come home with me in the food b4 and they are such a pain to eradicate not to mention repulsive.

How do you all keep your large bags free of those pesky moths? It's not like I can fit a 25 or 50 lb bag in my freezer lol

is it safe to use those moth strip things near the bag of food? or should I just keep buying it the way I am.