I tend to catch them (I say tend, but there are exceptions) near to where they escaped.
Nighttime is the best time to go snake hunting.
Set up flour lines across doorways etc to see if he crosses them... and I also place tin can pyramides along the wall... clumsy snake butts tend to knock them over...
Sorry for the stress it is never fun (even though he probably will show up).
Bruce
Flour lines sounds like a good idea. Hope you find your snake