Hi guys, I've had a phone call to clean someones static caravan on a very well to do site in the south. It turns out I will be the only one on site with potentially 200 caravans to clean. Most of the caravans are 6 berth and aluminium from what I can tell. I have a couple of questions. I have the prices for a 'first deep clean' and then a regular maintenance clean but was wondering what regularity to offer, every 6 or 12 weeks? 6 months? and at what point does it become a first clean? Also what would be the best way to clean them? i'm WFP but I'm guessing ubik magic sponges bucket and clothes maybe? I don't have a pressure washer. Thanks guys.