The kitty litter was in these 14lb discrete slippery packages, so I put them in one of those blessedly handy IKEA bags and slung it over my shoulder. At this point I'm pleased and surprised that I can sling that about like it ain't no thing. (And I'm also very surprised that the phrasing there came out of my mouth, but that was the phrasing that my head insisted on.) But it's good to know that there's a benefit from wrestling with a big bag!