I’ve experimented with bag sizes, and the 28 lb World’s Best Cat Litter seems like the sweet spot for my home. The 15 lb runs out too fast, and the bigger bags get awkward to pour. Performance-wise, it’s consistent. Clumps stay intact, and dust is low. I feed mostly Kirkland Signature wet food, and the litter keeps up with moisture surprisingly well. It’s not cheap, but it lasts longer than I expected.