I have found a very simple method to damp-dust my house. Take a large shagging dog and completely soak him in warm water in the shower. Cover him in some coconut scented dog shampoo and then thoroughly soak him again. By this time said dog will be so mad that he will dive out of the shower and throw himself all over the house, giving your floors and stairs and all low lying shelves and walls a jolly good wash and wipe. Next time I'll build a ramp and he can do the windows too.
He usually doesn't mind having a bath but I think he took offence at the girly shampoo.