Just getting started. I have 11 snakes now with more on the way. I have kept rats for pets longer than I have snakes, so it's a little disconcerting for me, but it has to be done if I'm going to feed the snakes and not spend a fortune on feeders. I like it because I know exactly what the feeders are being fed and what condition they are in, versus not really knowing when you purchase F/T.