If I'm being honest, I wait till half an hour before my next race and retrieve them from the Tesco bag they've been in ever since the last race, then bang them together for a few minutes.
Lets face it, if the soles are only going to last 400-500 miles seems pointless ensuring the rest of it's pristine.
Mind you, I go mad with the kids when they do the same! I'm a baaad parent!