Reinhard is grumbling about us cats being too many aboard.
The real reason is Mrs. Grundy and her book about manners.
She recited to us from her book, that it is highly amoral for tomcats and ladycats, to use the same litter box. Also she found out, that the dancing frogs are using her private backstage restroom.
So now Reinhard is to fly his V2 rocket to famous desert planet DUNE. There he must get sandfilled litter boxes :
A pink one for Squeaky, Spooky, and Piaf.
A blue one for me.
A green one for the frogs.
He complains about the waste of rocket fuel.