Yep, and Champion, and hard surface cleaner, they all take some of it off but it takes a lot of work to get it to off.
Apparently the last cleaners had some product that got it off in no time, however I think that was the only thing the site was happy with about them, hence us coming to take over.
It's a contract for roughly 10 caravans a week to be fully cleaned so I want to get it right.