Hey Camelot;
If you're finding the small flush isn't evacuating urine, you may need to adjust the flush
it's really easy to do, just twist the knobs under the lid
it's in the manual.
As others have mentioned, my Cadet3 can flush away poop on the small flush. The Cadet line is rated a MAP1000; one of the strongest flushes on the market! It can flush one dozen golf balls on the large flush setting!