You must have a lot of vermin in your house. You might consider letting it go again to keep down their population. :)
: Last August I found an adult female trans-Pecos rat snake on the staircase. I have not kept that species for a long time, and when I looked at my computer database there was only one possibility. It was a juvenile that had escaped, 9 months old, in 1997. It survived undetected and grew to adulthood inside our house over a five year period!