I don't know what brand it is that Sam's Club sells, but it's fabulous. It comes in the huge tub with the metal handle and has a green lid. It's only $8 (!!!!!) per container (US). It works great, lasts a long time (we have a roll-a-way box), controls odor wonderfully. My mom and dad got a bad tub once. It was clumped inside the tub. My dad called the number on the tub, they apologized, fed-ex'd him a fresh tub to replace it, an extra tub for his trouble, and a return label because they wanted to test the bad stuff. That sold him on it.