Good stuff! Now help him find his own place to live.
I don't have children (child-FREE) but the misses has three, the youngest of whom is a student and spends 6 weeks in the summer with us and does sweet FA. Clothes, food, books, magazines ALL OVER THE PLACE - not good for my OCD. And she leaves ALL the lights on ALL the time, here when it's the middle of summer and light until very late. And breathe...
Anyway, I'm sure you'll manage easily having your son back .