Piglet, I agree with the 'violating his space" thought. The shared family areas have to be picked up daily, but their rooms I don't care really. About once a month I will go through with them and do a massive tidy of their bedrooms. My kids' bds are in the summer, so every 6 months we get a new toy influx (BD and XMas) So toy thinning is a regular occurence at this house.