I tried a variation of this kitten massage in the bath and Milo ran to his litter tray and dropped two massive logs, they weren't rock hard so the stool softener is working, he is still far too round, clinging to his hot water bottle in spite of the heat.
https://youtu.be/lqd_cZTM9pI?si=pnof43xTQ82Y4iJ6
