I do what I can during daycare....folding laundry, vacumming, whatever I can. My daycare is all about real life! Cleaning can be educational....help find pairs of socks, etc....and of course free play nearby. I see nothing wrong with it.
Bigger jobs like bathrooms I do during naps. I find it hard to motivate myself, but I break it up over the week. So, cleaning one bathroom while their sleeping doesn't take long, then I get my break after....I do a little everyday. Mostly I feel like I just pick things up and redo the same things over and over and over and over....