Ive had my first chippies a few weeks now and so far no smell, this has been confirmed by visitors. I started with a tray in the corner with sawdust in but they tended to flick it out everywhere so i bought a bird bath off ebay which seems to solve that problem as its enclosed. If you see any droppings just pick them up and put them in their toilet so they know where to go
iver cleaned mine out properly just once and i havent had to change the sawdust in their toilet. infact i think they save up their poo for when i let them out their cage for an hour as it seems to get everywhere lol