Sorry, that Smashing Pumkins song "Runaway Train" has been running through my mind all morning.
Actually, I DO feed mine at night during the hot summer months. Primarily because I don't have time during the day and I stay up late to do so. My Ex called it "puttering" around the garage or snake room. Thats a kind way of saying that I am scooting around the house like some old man. Hey, it relieves stress...and alot of us
need that relief. Dureing the winter months I tend to clean on weekend and during the day. Nightime is to cold(A bitter 50-60 degrees in San Diego...dont hate us SOFT Californians...we pay up the whazooo for this weather. 
And, since I hate dirty cages, I tend to clean them whenever the "pungent" scent of indigo poop hits my nostrils. Which is daily. Or no less than every other day.
Lessons #1> Puttering around house late is good, might as well clean cages. You could be doing a lot worse.
Lesson#2.> Indigo snakes need cleaning all the time. And often when you clean the cage...they just drop another load in it. kind of like raising ungratefull children who, as soon as they get to high school, take you car keys and drive over to Canada to party. Without your permission. lol
**Cheers**
Fred Albury
Aztec Reptiles
PS I buy chicks and rodents locally so cant comment on rodent pro