Kenwood Steam mop

\015 We bought a Kenwood steam mop with the express purpose of cleaning our ceramic tile floors in the kitchen. We were under the impression from reports we have had that the steam mop would be the most effective way of keeping this floor clean (more effective than mopping with bucket and mop, which took quite a bit of back work). However, while the steam mop makes some difference, it hasnt been as remarkable as we thought. Is there something special we need to know about how to more effectively clean these floors? They are ceramic tiles which are reasonably textured and they have grout in between which always seems to stay dirty even after mopping with the steam mop or traditional mop.\015 – Eureka Enviro Steamer 310 Stick Vacuum