I'm not sure if they are absolutely needed, but I'm pretty sure they are for Ackies. The solution would be feed f/t that way you only need to purchase them as need, thaw them out and then they are gone. Or if you want to buy them in bulk, and cant put them in the regular freezer, buy a mini fridge b/c if you crank the temp all the way down it freezes everything, thats what i did because i had about 20 jumbo rats, 30 medium rats, adult mice, and pinkie mice, and they would take over my entire regular freezer haha.
