Feed bags

Ok,what to do with old feed bags. I get thru 10 -20 per week during the winter months from feeding the goats and chickens.
I would like to find some economical way of storing these apart from stuffing bags within bags.
Apart from the property here in Ohio I also have land in Colorado, where I would like to use these bags to build a sand bag home.
Does any one have any ideas for storage for these.

Thanks Phil

Laying them flat would be my guess. The question would be how many can stack before a new one is started. Stuffing in bags takes too much space.

I collect feed bags from the cattle ranchers in my area. I use them when I sell my homemade compost.

As for storage, I stack them flat putting some heavy boxes atop the stack to flatten them out good. Once the stack gets around 2 foot thick, I tie it up with baling twine. Then I stack the tied up stacks in a pile in the barn. That's the best method I've come up with so far. It still takes up space. I haven't figured out an easy, simple way to compress the stacks further.

As the others have said, flattening is best. Ive saved sacks from a brewery, and flattened and folded ten or twelve then placed them into another bag. Easy to count later, if you care to.

I’d also warn about UV degradation, the sacks that I had broke down after a year or two, in full sun. Tearing to pieces easily, shedding tiny bits all over. So, if you are saving them do it well, indoors, so they don’t get ruined before you need them. Also, make sure that they are completely empty so that rodents or insects don’t go after the leftovers... fouling things and chewing holes!

We lay about 6 bags flat on a table, then we roll them over a piece of pvc pipe.  When they are tightly rolled we remove the pvc and tie the bags in two places with the string off the bags.  These can then be placed in cardboard boxes to be stored.