Is anyone else really disgusted by Come dine with me down under?

This is the first group I have watched. They were all absolutely filthy! I have not seen any Brits pratically dripping sweat into the food - wiping their swear on a kitchen towel and leaving it on the table, not washing hands! You are cooking for people! On television too!! And they are quite rude and ill mannered too. I dont want to tarnish all Australians under the same brush but this really isnt helping their rep!