Gourmet Catnip Cheese Wedge Toy (1-pc) - Interactive Play & Pounce for Kittens and Cats

Is the whole sushi deluxe set for sale? I don’t see it.

What is the size of the olives? I have a small dog named Olive (10lbs), but these may be too small for her.

Are these refillable? Like with fresh cat nip?

are these machine washable and if not how best to clean?