I admit to having a rug of piss (that's washed every few days) as I'm horrendously accident prone and last year I slipped and twatted my head off the wash basin. It's less of a pain in the arse to wash a rug than it is to wash them rubbery things.
And anyone rinsing off cooked mince is washing off flavour. Can you imagine what Gordon Ramsey would say?!