For the warmer months we're going to stick with the gallon containers, in the winter, however, we now plan to use coke bottles with nipples as it's going to freeze at some point, no need to waste so much water, plus we can wrap/insulate them so they last a little longer, and we can have twice as many ready so the morning is just replacing 12oz bottles, not defrosting and replacing gallons...When it gets to -5, not much does any good, better to have easy and LIGHT replacements...Walking on slick, ice, slush and snow with gallons of water can be dangerous, we figure a knap sack sill suffice with the new plan...We'll see, next winter, and update ya'll!