Ian & All, I was on a demonstration the other day when this equipment was used on a Macdonalds drive-through and it shifted the gum easily. A local councillor was also present and he was impressed with it. The Manager from Macdonalds gave my colleague the contract to clean it once a month (£400) and has recommended him to another fast-food outlet down the road. There seems to be quite a bit of money to be made here with the right equipment and the right attitude. I have used this kit on domestic driveways and it's a piece of cake to use. I think it's the way forward because in this day and age, there's block-paving everywhere and it gets filthy, especially when you drive vehicles on it!