I went to a pet superstore recently searching for clumping clay litter, and they only sell cat litter from two different companies... let's call them CompanyA and CompanyB.

Even though these two companies only sell clumping clay litter at this particular store, they have several "varieties". For example, CompanyA has *Super Scoop*, *Double Duty*, and Multi-Cat. CompanyB has *MULTI-CAT*, *EXTREME*, and *TRIPLE ACTION*.

I've seen these "differences" in other cat litter before, but I have no idea what the differences are.

With that said, I have two cats: one's middle-aged and the other one's a senior citizen. 

Is there a difference between these "varieties" of cat litter? 

For example, the *Super Scoop* and *Double Duty* from CompanyA are apparently heavy-duty cat litters, so why do they offer a *Multi-Cat*?

CompanyB has *TRIPLE ACTION* which sounds like something from a Rambo movie, but is it stronger than *EXTREME*? Will *TRIPLE ACTION* and *EXTREME* not work if it recognizes that there is different feces from different cats and that's why they offer *MULTI-CAT*?