Done a beautiful house today only about 5 years old, loads of really big windows, turned out the inside glass was dirtier than the outside glass. At the moment I've been charging the same price for in as out. I was wondering whether the inside should be cheaper price until I came across this house today. All sorts of **** on the windows. Took much longer doing the inside than outside which is a first. Does anyone up the price when there's kids and pets?