I only wet pail dirty nappies and I've been using the mothercare nappy soak designed for use with smart nappies. It seems to do the job ok but I'm just coming to the end of the box and I'm wondering if there's anything better out there. Obviously I don't want anything that will ruin any of my nappies (I don't know if some nappy soaks aren't good on colours?)... does anybody have any recommendations?