We bought a pedal-lid bin from Bunnings (about $20) and that keeps the smells under control - pop a bag in there and the #1's go straight in there, and the #2's go into a smelly bag and then into there. Empty it every day when the general rubbish goes out.

Wasn't aware of the law to scrap off the poo, not sure how that would work - I do flush my baby wipes though.