Here is such a money saver you need people to share with! If you go to a day old bread store and ask if they have any "Animal Feed" racks of bread for sale. You can get an entire rack of bread, buns, rolls, snack cakes, tortilla's, chips, etc. for 5.00. If they say no, ask when the best time is to get one. They won't sell it for human consumption though.
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My husband and I go to the dumpsters behind the food stores and get lettuce and apples for our Emu. I cut up the apples and freeze them.