Thanks all! I did think that would be the answer. I'm just concerned about getting it germ free! I have a dog and 2 kids, one potty training - the floor can get grotty! We just used diluted bleach on our old floor, but don't fancy doing that to the karndean!
Have a steam mop and use at least twice a week (dog and kids here too). Never had a problem yet and brings floor up so much better and with much less effort. Once mopped the old way then steamed just to see and the cloth was brown with dirt still.