Used this stuff today on the grout on my floor tiles and it is totally amazing. I have cream floor tiles with cream grout in my hall, kitchen, utility and cloak room. Add a 4 year old and a dog and it is a recipe for disaster.
It was messy but not hard work and floor in my kitchen looks like new. Just sponged it on the lightly scrubbed with a nail brush and rinsed. Now just need to do the hall and utility.