Hi, we have a stone coloured carpet throughout our home that is a nightmare to keep clean. We had the carpet cleaned in November but it is disgusting again. If a drop of water gets on the carpet it turns into a dirty mark! The more i try to scrub the worse it becomes....with 2 children under 5 it's a bit of a nightmare. Is it worth having it professionally cleaned and stain treated? We hired a 'rugdoctor' previously. Any suggestions would be gratefully received!