I feed Cali a live adult mouse every 5 days. The place I got her from had her on live Hoppers once every 7 days. She wasnt really thin but I noticed about the 5th or 6th day she was searching for another meal. I upped the size to small adult mice, but she was still searching 5 or 6 days later. Once I hit full Adult the searching stopped, and she does not refuse on the 5th day. So I take that as a sign that she is well feed and happy.
I've had her a little over 3 months now, and got her to take a F/T only once. She didn't constrict. I offered another F/T 5 days later and she wanted nothing to do with it. so 2 days after that I dropped in yet another live adult mouse and she struck, squeezed, and swallowed within 10 mins.
I only decided to try F/T for the fact that her last live meal before the F/T attempt, was on a thin line of going bad. She struck at its rear and had the mouse head exposed as it was being squeezed. I watched very closely to make sure she wasnt going to get bit. It scared me to think that she could have been bitten, so I decided to try F/T for the next feeding. (which was 5 days later.)
She is back to Live due to her refusing F/T for the time being. Still debating if I want to keep attempting F/T. I guess the only way to tell is if I get another scare from another close call. (Which I hope and pray never happends again)