We have similar companies working in a lot of our supermarkets and town car parks. My personal opinion is to steer clear, like Mark said they only have a trolly worth of water and I'm not sure on how regularly the sponges and things they use are changed. They often do a quick cheap job but I'm not sure it's worth the hassel if something goes wrong.
I'm not sure they are Car Park Valeting, but certainly the same idea. |