Sacking Groceries

Do you ever wonder at the method people use to sack groceries.  I often wonder about the rhyme and reason of this.

One of the things that I have noticed is that if I bring my own reusable sacks, almost all the cashiers stack the scanned items in a pile before they start placing them in the sacks.  I have an insulated sack, and if I bring that, I unload my refrigeratables from the cart first, so they can be packaged in the insulated sack first.  Even so, many of the cashiers "forget" to use the insulated sack.  This makes no sense to me.

The other thing I wonder about is mixing non-food and food items.  I appreciate sackers or cashiers who double wrap toxic items.  And, I appreciate not mixing food items with clothing, detergents, paper products, cleaning products and the like.  But I am always amused that pet food is sacked with these other non-food products. I wonder if the sackers and cashiers are told to do that, or if they consider pet food as "non-food" products, and treat it the same way automatically.

I, on the other hand, think of pet food as food items, and if asked, I would say sack it with my other food products.  I do not speak and tell the cashier or sacker to do this, but maybe, I should.