How long did it take you to make your ball python to eat F/t?

I have never fed live. I had no problems switching any rescue that came in from live to F/T that includes the one wild caught rescue I have. She is crazy frusterating to deal with but the switch wasn't hard but general feeding is. :taz::taz::taz:

4 of mine ate f/t the first time and every other time it was offerred..

One picky little mojave took it the first time and hasn't taken it again since.