BTDT, ditched the tanks after the second escape.
Recently my common WC garter snake took an unauthorized slither; I opened the drop door to put a feeder in, and she came flying out like a coiled spring, hit the floor, and took off under a dresser before I could twitch. I found her two months later in a pile of my daughter's stuffed animals.
I think we would both be happier if I put her back outside where I found her. The only reason I brought her in is that she had an injury, which has long since healed.