I mean day to day. Right now DD is wearing a top that got covered in paint at Playgroup and has been sliding down her chute in the garden after the rain so the backside of her trousers is dirty. DS is also covered in dirt. I don't mind at all as I think it's healthy for them to be out playing and it's all part of being a child. We're only in the house for the rest of the day anyway and I'd change DD's top if I was going anywhere but my Mum would be aghast at this. I remember when I was a kid she hated me playing with the boy next door because we would both come in filthy however I always remember this as being the most fun. They get a bath most nights although have been known to skip this if they are relatively clean and time is short