Just remembered another oldie... an aunt used to add orange peels to my baby cousins diaper pail to help with odour.
I used baking soda, and also remember adding a little Diaper Pure in the pails to help keep odour down.
Had two diaper pails on the go back in the day, one for wet-wets which was kept in the nursery, and the other pail for dirties which was kept in the bathroom.
